Here are some more servers you can choose from:
  * [[http://www.jabber.org/|jabber.org]]

  * [[http://chatme.im/|chatme.im]]
  * [[http://www.google.com/talk/|gmail.com]]
  * [[http://www.jabber.org.au/|jabber.org.au]]
  * [[http://www.jabber.ru/|jabber.ru]]
  * [[http://www.jabber.se/|jabber.se]]
  * [[http://www.jabberes.org/|jabberes.org]]
  * [[http://www.jabbim.cz/|jabbim.cz]]
  * [[http://www.jaim.at/|jaim.at]]
  * [[https://jappix.com/|jappix.com]]
  * [[http://linuxlovers.at/|linuxlovers.at]]
  * [[http://www.livejournal.com/chat/|livejournal.com]]
  * [[http://www.ovi.com/|ovi.com]]

For more servers visit http://xmpp.net/ and for a really extensive and detailed list, visit http://www.jabberes.org/servers/ or http://list.jabber.at/.