Beejive - MSN,ICQ,Yahoo,AIM...
Facebook
Heysan - AIM, MSN, ICQ
Ilace - Chat Room for Iphone Users
Ipling, A social site. Write down what you like, then share and meet people.
Irovr - A social network for iPhone users.
Linked In
Meebo - Supports major chat clients, including AIM, MSN, Yahoo, and ICQ.
MSN Messenger - Do yo MSN thang on you’s iPhone.
My Space
Zipbbs - Chat room app
Zkout - Communicate with people in your immediate surroundings.-