Overview and History of IM's (1) Cooperation (2) Decentralized Instant Messaging (1) List and Comparison of instant messaging protocols (1) Users base (2) aol instant messaging (2) online instant messaging (2) mobile instant messaging (2) aim instant messaging (2) instant messaging services (2) open source instant messaging (2) iChat (2) Miranda (2) Psi (2) Trillian Pro (2) Windows Messenger (2) Jabber (2) ICQ (2) Gadu-Gadu (2) Google Talk (2) IM2 (2) QQ (2) SIM (2) IRC (2) IMPS (2) Cooperation (2) Decentralized Instant Messaging (2) IM's Servers (2) List and Comparison of instant messaging protocols (2) List and Comparison of instant messengers (2) Overview and History of IM's (2) Users base (2)