you know XBox, wii, ps3 and SteamID. where on your page, you say if you have one then put your profile name. Does any one here know what a SteamID is??
Steam is a digital distribution, digital rights management, multiplayer and communications platform developed by Valve Corporation. It is used to distribute games and related media online, from small independent developers to larger software houses. Steam also has community features, automated game updates, in-game voice and chat functionality.
Left 4 Dead, Left 4 Dead 2, Team Fortress 2, Counter-Strike: Source, Portal, and Half-Life 2 all use Steam amongst others.