Out today is another free VoIP solution. OctroTalk works on all S60 3rd Edition phones and is an Instant Messaging application with full VOIP and peer-to-peer file transfer. You can connect to GoogleTalk, Jabber, MSN, Yahoo, AIM and ICQ (though not Skype). OctroTalk claims to use a low bandwidth codec and can be used with GPRS/EDGE networks.