We are very pleased to see you on our new Jabber service web site. It's fully free and available.
Currently we're support the following transports:
- MSN (to reach someone in MSN use the following format: firstname.lastname@example.org )
- ICQ (you can hold up to 2 ICQ UIN's on one Jabber ID (JID) simultaneously) protocols)
- Gadu Gadu (GG) - not very stable yet
- Google Talk
- IRC (irc how-to)
Follow this link, if want to know more about XMPP protocol and Jabber.
Use PSI, Miranda, Pidgin or whatever you want as your XMPP client. But I would recommend you to use PSI or Pidgin 'bcause it supports service discovery (this feature allows you to use ICQ UINs via JID).