Hey guys, just thought I'd let you all know SC2 is free to play this weekend. I'm not sure what kinda access you get as I haven't quite installed the game yet but you certainly get access to battle.net to play 1v1/team ladder games.
Probably get to play skirmish against the AI too. But I would imagine story mode is locked out. Not sure about that.
You need to go to http://sea.battle.net/sc2/en/blog/93577 and there are links to create a battle.net account and to download the client.
Might see you on battle.net this weekend!
My ID is Bellyfrog :)