I'm trying to keep track of the mass migrations to Mastodon that have happened.

I think it started with:
- early adopters, programmers, FOSS people
- tons of peeps in Japan
- furry community moving off Twitter
- LGBTQ+ folks leaving twitter
- people who saw that polygon article (me) or heard about it when it started getting mentioned on hackernews
- comics/artists leaving twitter
- NSFW blogs leaving Tumblr
- sex workers
- and now, Indian politics Twitter users

Am I missing any big moments?

@abbenm i mean, a lot of people who left tumblr during the nsfw policy change weren't necessarily nsfw blogs (including me). The filters were awful and blocking normal posts and the staff attitude about it was pretty bad.
@hoppet That's definitely true. I'm using a shorthand there. It was more accurately a tumblr mass migration at the time of the policy change. Point taken though. I want to do a revised version of this post where I rephrase things and re-organize the timeline a bit based on the info contributed by people more knowledgeable than myself.