Everyone is saying if you go on xfire you can ply ba2 online. What is Xfire and how do I get onit.

Xfire is a freeware instant messaging service targeted toward gamers, that also serves as a game server browser. Its uniqueness lies in its ability to detect what video game a particular contact is running and allowing IMs to be sent and received from inside the game in question, eliminating the need to minimize the game window. It is currently available for Microsoft Windows only.

http://www.xfire.com/