Roundup/Services

XMPP Roundup: services
http://blog.facebook.com/blog.php?post=297991732130 / http://wiki.developers.facebook.com/index.php/Integrating_with_Facebook_Chat / http://www.facebook.com/sitetour/chat.php
 * Facebook Chat on XMPP

http://www.rss.im/
 * RSS.IM

By an ex-Googler https://imo.im/
 * IMO.IM

http://www.tigase.im/
 * Tigase.im

http://www.jappix.com/
 * Jappix

http://jabber.me/
 * Jabber.me

http://livefyre.com/ for cross-domain, cross-blog commenting in real time over XMPP.
 * livefyre.com

http://upro.ufederation.com/ chat, question boxes and live tools for web professionals over XMPP.
 * U Pro

The Russian Vkontakte social network is using XMPP as the basis of their chat system, enabling third party clients to connect. http://vkontakte.ru/
 * After Facebook, Vkontakte

http://raju.wiki.zoho.com/Zoho-Chat-Supports-Jabber.html
 * Zoho supports XMPP