Nimbuzz released a new version of their application to bridge the 3G VoIP gap, and also turn the iPod touch into an iPhone, with free Wifi calls to instant messaging buddies already available, a full dial-pad, and the ability to make VoIP calls.
» App Store – Nimbuzz

Nimbuzz lets you call, chat, message, and send photos, music and video on the go, for free. From one contact list, use your favorite features to connect with all your buddies from Skype, Windows Live Messenger, Yahoo! Messenger, ICQ, GoogleTalk, AIM, GaduGadu, Jabber and Twitter, plus 23 social networks including Facebook and MySpace.
» App Store – Nimbuzz