Officially, the N900 has built-in support for instant messaging and VOIP through Skype, Google Talk, Jabber/Facebook, Ovi and SIP.To download this software click here:is.gd Unofficially, it’s very very easy to add support for even more messenger standards: MSN / Live (Haze), Yahoo, AIM, ICQ, Gadu Gadu, GroupWise, QQ, Sametime. This video goes through the entire process of adding support for these additional standards by installing a special app. After you’ve installed the app, the N900′s built-in messaging and calling systems will include all of these additional standards.