Joana de Castro Arnaud

@jcastroarnaud@mastodon.online
35 Followers
102 Following
1.3K Posts

A simple person, with some very complicated ideas. Trans woman. Computer programmer. Science and math fan. Amateur writer. Amateur game designer. Curious about too many things.

Uma pessoa simples, com umas ideias muito complicadas. Mulher trans. Programadora de computador. Fã de ciência e matemática. Escritora amadora. Criadora de jogos amadora. Curiosa sobre um bocado de coisas.

I'm also@jcastroarnaud (math and programming); @jcastroarnaud (arts, crafts, writing); @jcastroarnaud (everything else); @jcastroarnaud (on Twitter, quiet quit)
CityRio de Janeiro, RJ, Brazil

CTO of a big business, in 2040:

"To cut costs in #software maintenance, and reduce the technical debt accrued in the last 15 years, we are hiring 20 programmer trainees, and sacking #ChatGPT."

#Humor #VibeCoding #Programação #Programming #TechnicalDebt

CTO de uma grande empresa, em 2040:

"Para redução de gastos em manutenção de #software, e para redução do débito técnico acumulado nos últimos 15 anos, estamos contratando 20 programadores trainees, e demitindo o #ChatGPT."

#Humor #VibeCoding #Programação #Programming #TechnicalDebt

For the last 20 years ive been part of a small online modding scene for a very niche sandbox video game where a large part of the communtiy is people of all art ability contributing to produce work for the game either in written, 3d or 2d art form.

the introduction of ai generative image work into the community lead to 95% of the human designed 2d and 3d graphic art to stop being produced entirely.

1/2

How to Get Started with Mastodon

Listen to an audio version of this post read by the author

I recently wrote about some terrible big changes at Meta, like censoring all hashtags related to Democrats and falsely labeling unflattering photos of Trump as AI-generated fakes on Threads and Facebook. The issues don’t just stop at Zuck’s empire, though. Since taking over Twitter, Elon Musk has blocked links to competitors, banned journalists, heavily censored words like “cisgender”, and manipulated the algorithm to match his personal views. Meanwhile, the ban on TikTok, the other major social network, has been temporarily lifted, but it’s unclear how long that will be the case and what major compromises the platform will make to avoid Trump’s scrutiny.

https://www.youtube.com/shorts/tyXNpFso23A

A better Social Web Is already Here:

If it’s not clear yet, now is the time to leave corporate social media behind. Luckily, there are plenty of decentralized alternatives like Pixelfed and Peertube. Today, I’ll walk you through getting started on Mastodon—an open-source, microblogging platform with a thriving community and some fantastic features.

  • Community-Driven: no single company or user owns Mastodon
  • No Ads, No Algorithms: Your feed is in your control, showing posts in chronological order without corporate interference.
  • More Control: Edit your posts, set custom visibility, and use content warnings to shape your experience. It is 2025 y’all, how is “editing your post” still not a core feature on all social platforms?!
  • Federated & Interconnected: Follow and engage with users across platforms like Pixelfed and Lemmy, all from Mastodon. Once you experience how amazing this is, you’ll never want to join another social platform that isn’t part of the fediverse.
  • Decentralized & Resilient: No single entity can buy or shut it down. If Elon Musk bought a server, folks could switch to other servers without losing any followers.
  • Great Vibes: After 17 years on Twitter, I thought finding a real alternative would be tough. But Mastodon’s community is thriving with artists, journalists, musicians, and even yo-yoers. There’s truly something for everyone… except Nazis.
  • Stronger Privacy: No invasive tracking or data mining—your posts and interactions stay yours.
  • Network effect: Mastodon is part of the open social web, powered by ActivityPub. With integrations across WordPress, Pixelfed, Flipboard, and even Threads (for limited ActivityPub support), the decentralized network keeps growing. Every day, new ActivityPub-powered tools and platforms expand this ecosystem. While Mastodon itself may not be the biggest social network, the broader fediverse creates a massive, interconnected space for online communities.

How to Get Started on Mastodon

1. Choose an Instance

This sounds confusing at first, but choosing an instance is no harder than picking which email client to use or where to host your website. Each Mastodon instance has its own rules, moderation style, and community vibe. Some are general-purpose, while others focus on specific interests like art, tech, or activism. You can browse and compare instances at joinmastodon.org or instances.social.

Don’t worry too much about what instance you join because you’ll still be able to interact with any other instances, and you can always bring your followers with you if you decide to move. I personally like Mastodon.social and would recommend it to new users.

2. Create Your Account

Picked your instance? Great, now sign up and create your profile. You’ll set up your username, add a bio, and upload a profile picture. Your handle will look a little bit like an email handle, with a username in the front and a server name in the back. For example, I’m @docpop@mastodon.social

Please take a little time to flesh out your profile before diving into the next step. Whenever I see new followers, it’s nice to see text in their bio or an image in their avatar; otherwise, I’m probably going to assume it’s a bot.

3. Follow People and Explore

You’ll get the most out of Mastodon by following people and engaging with conversations. Mastodon’s “Federated Timeline” shows posts from across the network, and the “Local Timeline” shows posts from your server, but hashtags are a great way to find users across the fediverse that are interested in the same topics you are. For instance, #Caturday, #graffiti, #accessibility, and #IndieGames are tags that I like to explore. The search function helps you find users, hashtags, and posts.

4. Post and Engage

Whenver I hear complaints about Mastodon, it’s usually from users who sign up and never posted anything. The best way to find a community and get used to Mastodon is by actively posting. Posts on Mastodon are called “toots”, but you can call them whatever the heck you want.

For your first toot, I highly recommend writing a short introduction, including a list of your interests and what you are hoping to get out of Mastodon. Be sure to use the #introduction hashtag in your post too. This makes it easier for other new users to find you, or you can click on the tag yourself and see if you can find some other new users to follow.

Posts can be up to 500 characters long (or more, depending on the instance). You can boost (like retweeting), reply, and favorite posts. There’s also built-in content warnings and post visibility settings, giving you more control over who sees your posts. For instance, you can set a toot to only be seen by your followers, by people specifically mentioned, or by people on your server.

I set all of my posts to public, but I know social media is different for each person. There’s no right or wrong way to share your posts on Mastodon.

5. Customize Your Experience

The easiest way to use Mastodon is through an app. The default Mastodon app is great and available on most devices. Personally, I like to use Ivory for iOS and Mac. OpenVibe is an awesome tool that allows you to post to multiple platforms (like Mastodon, Bluesky, and Threads) and see your feed all in one place. OpenVibe is free and cross-platform.

The biggest advantage of using an app is that you’ll never have to think about signing into different servers. If you are using Mastodon on the web, you might occasionally find yourself on another server, which is basically like being on another website. It can feel disconnected at first, but there are really cool tools like Graze (for Chrome or Firefox), which makes all these different websites feel interconnected. I highly recommend it!

6. Spread the word

Now that you are on the fediverse, it’s time to bring your friends here too. Social is always more fun with folks you know. Remember, if your friends join another federated platform, like Pixelfed, you can still follow each other.

You can ecourage other folks to join Mastodon by sharing a link to your profile, sending them a link to this post, or by sharing any of the great youtube videos on the subject with them. I highly recommend @JenJen@mastodon.art‘s guide to Mastodon for artists!

https://www.youtube.com/watch?v=deZwO9ezGlo

Have fun!

I love Mastodon, but I remember how confusing it seemed at first. “Servers”, “federation”, and “decentralization” all seemed too complex in the beginning, but these days I don’t even think of them. Plus, I can see how these tools make the open social web much better than silo’d platforms like X or Instagram.

It reminds me of podcasts, which are powered by RSS and not limited to one specific platform. These days everyone understands podcasts, without needing to think about which app they need to use or the open protocols that enable it. In a few years, the fediverse will be as commonly understood as podcasts, email, or the internet.

Today is a great day to take the plunge; try it out, find your community, and experience a healthy new form of social media! Have questions? Drop them in the comments or find me on Mastodon at @docpop@mastodon.social! I’d be glad to help out in any way that I can, but I don’t want to hear complaints about the fediverse if you haven’t been posting, following, boosting, and engaging already.

The Fediverse Files?

To learn more about the Fediverse, like how it works or how to connect your WordPress site to it, please check out the Fediverse Files series I produced for Automattic. Here’s the first episode.

https://www.youtube.com/watch?v=QzYozbNneVc

Shout out to @sylv_a@mastodon.social for creating the original image that I used at the top of this post. I modified it slightly for clarity.

#accessibility #BoardGames #Caturday #graffiti #IndieGames #introduction

The Day Instagram Blocked Democracy - Doc Pop's Weblog

#Democrat, #VoteBlue, #Bernie, #JohnOliver, and 24 other hashtags Instagram censored on the day of Trump's inauguration.

Doc Pop's Weblog

With bluesky (mostly) going down for a few hours today, I got to wondering about how decentralized the fediverse really is in terms of where its servers are hosted. I grabbed a server list from fedidb, with network information coming from ipinfo.io .

[EDIT: I did a better analysis on a dataset of 10x as many servers, see https://discuss.systems/@ricci/114400324446169152 ]

These stats are by the number of *servers* not the number of *users* (maybe I'll run those stats later).

fedidb currently tracks 2,650 servers of various types (Mastodon, pixelfed, lemmy, misskey, peertube, etc)

The fediverse is most vulnerable to disruptions at CloudFlare: 24% of Fediverse servers are behind it. Also note that this means that I don't have real data on where this 24% are located or hosted, since CloudFlare obscures this by design.

Beyond CloudFlare, the fediverse is not too concentrated on any one network. The most popular host, Hertzner, only hosts 14% of fediverse servers, and it falls off fast from there.

Here are the top networks where fediverse servers are hosted:

504 Cloudflare, Inc.
356 Hetzner Online GmbH
130 DigitalOcean, LLC
114 OVH SAS
56 netcup GmbH
55 Amazon.com, Inc.
55 Akamai Connected Cloud
36 Contabo GmbH
33 SAKURA Internet Inc.
32 The Constant Company, LLC
31 Xserver Inc.
28 SCALEWAY S.A.S.
24 Google LLC
23 Oracle Corporation
16 GMO Internet Group, Inc.
14 IONOS SE
14 FranTech Solutions
11 Hostinger International Limited
10 Nubes, LLC

Half of fediverse servers are on networks that host 50 or fewer servers - that's pretty good for resiliency.

There is even more diversity when it comes to BGP prefixes, which is good for resiliency: for example, the cloud providers that have multiple availability zones will generally have them on different prefixes, so this gets closer to giving us a picture of the specific bits of infrastructure the fediverse relies on.

The top BGP prefixes:

55 104.21.48.0/20
50 104.21.16.0/20
48 104.21.64.0/20
41 104.21.32.0/20
41 104.21.0.0/20
38 104.21.80.0/20
32 172.67.128.0/20
31 172.67.144.0/20
28 172.67.208.0/20
28 162.43.0.0/17
27 104.26.0.0/20
26 172.67.192.0/20
26 172.67.176.0/20
23 172.67.160.0/20
19 116.203.0.0/16
17 172.67.64.0/20
17 159.69.0.0/16
16 65.109.0.0/16
14 88.99.0.0/16
14 49.13.0.0/16
13 78.46.0.0/15
13 167.235.0.0/16
13 138.201.0.0/16
11 95.217.0.0/16
11 95.216.0.0/16
11 49.12.0.0/16
11 135.181.0.0/16
10 37.27.0.0/16
10 157.90.0.0/16

75% of fediverse servers are behind BGP prefixes that host 10 or fewer servers, meaning that the fediverse is *very* resilient to large network outages.

Top countries where fediverse servers are hosted:

871 United States
439 Germany
156 France
148 Japan
75 Finland
57 Canada
49 Netherlands
38 United Kingdom
26 Switzerland
26 South Korea
21 Spain
19 Sweden
18 Austria
17 Australia
15 Russia
12 Czech Republic
10 Singapore
10 Italy

And finally, a map of the locations of fediverse servers:
https://ipinfo.io/tools/map/91960023-e8c6-4bee-9b07-721f2c8febab

Hi.

Autistic person here

RFK Jr. didn’t “misspeak” when he called autism an “epidemic” that “dwarfs COVID.”
That’s eugenicist rhetoric.

We’re not a disease—we’re people.

The spectrum includes those who need support and those building the future. Diagnoses have expanded because understanding has improved—not because autism is “spreading.”

Dehumanizing us is not health policy. It’s dangerous

#actuallyautistic

the scam is we’re lookin’ at any pair of palookas matchin’, not just you and one guy, lemme tell ya

it’s a numbers racket, see? With 23 people, you got 253 possible pairs. that’s a lotta birthday comparin’. Real cozy odds for a collision

the birthday problem’s like a good con, see? it don’t look suspicious ‘til ya count the angles. then BAM! It hits ya right in the probables

So's ya walk into a speakeasy, see? there’s a buncha mugs standin’ around, drinkin’ bathtub gin and yappin’ about their birthdays

Now ya might think, "What’re the odds two o’ these palookas were born on the same day?'

probably slim, right?

wrong, see? you don’t need a hundred mooks in the room.
Nah, lemme tell ya.

You only need 23 people before the odds of a birthday match hit better than 50-50

that’s right, dollface, just 23 mugs and bootleggers, and odds are better than a coin flip that two of ‘em are blowin’ out candles on the same day

I "love" how we need to keep on studying things that are flat out good for society while bad things just get rolled out without the same onus of proof.

Things that need to be proven over and over and over:

- Universal Basic Income
- Walkable cities prioritising pedestrians, bicyclists, and transit
- Low speed limits for cars
- No-strings housing for homeless
- High taxes for the rich

And the list goes on and on... why do we make it so hard to improve our society while making it so easy to ruin it?