ChatCHB uses the XMPP (also known as Jabber) chat system in order to provide communication to its users. You can use this page here, or various other XMPP clients on many operating systems.
Your account elsewhere on this site is separate from your chat account.
Username Format: firstname.lastname@example.org (like email)
Registration: Registration is simple. You can register from within any of these clients. There is no dedicated webpage to register on, though you could technically register from the client on this page.
ClientsThere are many clients available to you in the navigation panel to the left. Please try many of them to find what is comfortable for you.
If you would like to use Conversations for Android for free, please check out the F-Droid app store.