I know my words don't matter here anymore but… I've had the chance to buy L4D a couple times before, but in the end I kept trying to decide if I should really get it or not.
I mean, I did like it but… (Not trying to start the old flame war again) I thought, In my honest opinion, that it would be better off as a Cloverfield video game. But since it was successful in general, I think it is a good sign that a Cloverfield game could actually happen.
Who knows. *shrugs*
But still, L4D looks like a good game to play. I played the demo and I think it is a must have for many people who are into the horror-survival genre.