This is a Mastodon instance for bahnhof.cz. Instead of having a set topic, the instance is defined by being mine :-) I'll keep the registration open for now, but there's no guarantee of the service or anything, proceed at your own caution. I assume this instance can take about a double-digit user count before it starts to be burden.
There are few rules you'll have to deal with should you really want to go on.
Mastodon is a social network based on open web protocols and free, open-source software. It is decentralized like e-mail.