imo messenger is an instant messaging tool that lets you talk to any of your contacts on all of your instant messaging accounts including Facebook, Google Talk, Skype, MSN, ICQ, AIM, Yahoo! Messenger, Jabber, Hyves, VKontakte, even Steam chat.
The application thus lets you send text messages, images and videos, as well as make voice calls, using WiFi or 3G. And all of this from just one platform interface in which you register all of your accounts.
imo messenger is a very simple communications tool that proves particularly useful to users who usually use many different communications channels with many different people and who just want to have one application in which to group them all.