I saw a few people on birdsite saying "the trouble with Mastodon is that you have to know what a server is".

That doesn't seem like a high barrier of entry to me. 6 year olds who play Minecraft know what a server is...

@tomw seems like a good analogy, although choosing a server is a definitely a bit of a speedbump even if you don't really care ...and while moving later isn't _too_ bad I wonder if there are ways to help explain why you might care, and which servers would suit you. Getting invited by someone you know who's already got an account might make the whole thing less of an issue before long I guess.
@jtonline Yeah, I'm definitely seeing more people go for the server that their friends are already on, which is a good way to decide.