Oh well, there are different implementations of IRC, and some limit you more than others. Flood protection is a pita if you want to share long text, since max message length is not that much. Netsplits are still a thing and your nick can’t be longer than 15 chars. Text formatting works on most servers, but that’s no guarantee. The length of a channel topic is also limited. You interact with the server only through the same messages you send to your chats. You need some kind of bouncer to still follow a chat if offline.