Left 4 Dead 2 Demo Open To All

In case you hadn't spotted, the Left 4 Dead 2 demo is now open to all, whether you've pre-ordered the game or not. Which you could well argue is the point of a demo. It's the first two levels of one campaign, so while not offering a big finish, will give you a taste for the new special infected, the melee weapons, and of course what it's like to play L4D in the sunshine. They say to go to the official site for more details, but I can't find any there. So instead open Steam. (Oh, and in exceedingly stupid news, if you pre-ordered L4D2 you will now also have a new hat in TF2. I feel like I'm writing news about a Barbie game.)