Nimbuzz IM is a free mobile and desktop application service that enables people to make calls, send messages and share files, on any mobile device and desktop for free.Nimbuzz also connects you to all your IM accounts (Facebook, Yahoo, MSN, Twitter, Gtalk, ICQ, MySpace, AIM, Hyves).Nimbuzz won the best mobile IM award for 2011.You can download Nimbuzz from www.nimbuzz.com. You can download the Older PC version of Nimbuzz with chatroom from Nimbuzz with chatroom for pc link.