@ocramius
Just in case. You don't need to be on most popular instance to efficiently use Mastodon.
It's even better if you choose less popular: it'll work faster for you and it'd be better for the network connectivity.
For example @ramsey has nice PHP-related instance 🙂
Gregory's Server
@skobkin yes, I will set up my own too, but I cannot currently do that due to other priorities.