I found https://movetodon.org/ today and it’s the best tool I’ve encountered yet for quickly rebuilding your Twitter following list on Mastodon, without manual imports or the like. (Thanks much @Tibor!)
Movetodon: Finds your Twitter Friends on Mastodon

@ChrisHardie @Tibor Just used it. Excellent tool.
@ChrisHardie @Tibor I started to try using it, but it asked me for my mastodon login, which kind of freaked me out, so I stopped. How do we determine its trustworthy?
@Tibor @serenebabe the logging in should only happen on the sites where you have accounts, and then it asks you to authorize limited access to those accounts (read only for Twitter but read-write for Mastodon contacts/relationships). No guarantees so ultimately it does come down to trusting the tool/developer.
@serenebabe @ChrisHardie @Tibor That’s my concern with every of those tools. I just started fresh on Mastodon but to be honest: I wasn’t that active on Twitter and didn’t follow that much others. Or was followed that much for that matter.
@ChrisHardie @Tibor Oh wow. This works so much more nicely that the other ones...
@ChrisHardie @Tibor Agreed. It is better than a couple of other tools I tried first.
@ChrisHardie @Tibor I'm still doing it one by one but I will probably have to do one of these eventually.
@Lingonomics @ChrisHardie @Tibor That’s me and I just found this piece of code has disappeared. It’s saying error :(
@ChrisHardie How do we know apps like these aren't just Trojan horses to get into our Twitter accounts to do damage?
@ChrisHardie @Tibor Wow. This tool is awesome. So much better than flipping back and forward manually to follow people.
@ChrisHardie @Tibor really excellent tool! Thanks

@ChrisHardie @Tibor

Just used that

https://www.movetodon.org/

Very great tool, strongly recommended !

👍👍👍

Movetodon: Finds your Twitter Friends on Mastodon

@ChrisHardie @Tibor Excellent that it also shows whether people are actually active on their #Mastodon account
@ChrisHardie @Tibor I'm afraid we may have loved it too much