• meebo.com
  meebo, the web messenger that lets you access IM from absolutely anywhere. meebo supports msn, yahoo, aol/aim, google talk (gtalk), jabber and icq.
  Meebo, the web platform for IM on any network or site. Meebo connects you to MSN, Yahoo, AOL/AIM, MySpace, Facebook, Google Talk, and many more!
  aim express facebook google instant live messenger msn myspace talk web windows yahoo
  in Misc with access meebo messenger misc msn supports web yahoo by 5 users

supports from all users