EQO (pronounced “echo”) is a FREE application that brings instant messaging, cheap calling and cheap texting to mobile phones. Designed as a presence-enabled social phonebook, EQO allows consumers to chat on the go using MSN, AIM, Yahoo, GoogleTalk, ICQ and Jabber, or call or text anyone in the world at super-low rates. You can call other EQO users at 50% off EQO’s regular calling rates, and text messages between EQO users are FREE. So the bigger your EQO network the better!