I've posted about this over on Twitter but since I see a bunch of fresh faces over here on Mastodon, I figure it's worth saying over here too:

If you moved here from the birdsite, welcome! Glad to see you here, even if you're still just exploring what Mastodon and the Fediverse have to offer. To get you up to speed on finding your friends on Mastodon, here are two tools you might find useful - Fedifinder and Followgraph.

Fedifinder (https://fedifinder.glitch.me) helps you find your Twitter friends here. It scans the Twitter accounts of people you follow, and builds a list of people who have linked Mastodon accounts; you can then take that list and import it into Mastodon, following everyone on it with a few clicks. It also optionally supports scanning any lists you may be on, as well as people who follow you.

Followgraph (https://followgraph.vercel.app) helps you find friends-of-friends you might want to follow. It scans the people you're following here on Mastodon, then builds a list of the most popular accounts *they're* following. This can help surface popular accounts among your friends.