Do I read this right that Bluesky is about 12x bigger? And I assume we're counting active users?
This is complicated.
What I'm counting is the PDSes that the bluesky relay reports knowing about, and how many repos (user data) they report having.
The number this returns is different from what you may see in other places. You'll see 38M for the number of total accounts. You'll see a few million listed for Monthly Active Users. My understanding is that what the relay reports is *some* measure of active users (it's the number of accounts the relay is currently maintaining data for) but it's not exactly MAU.
The Fediverse numbers are MAU, but it's also notorious that you can't get a fully accurate number for this because not all instances choose to opt in to such data collection, often by misreporting numbers.
Thank you for explaining this to me. As might be evident from my profile, I'm not technically more that passingly literate.