"Waah waah waah, I'm a whiney console gamer, waah waah waah, I deserve more free stuff, waah waah waah, Valve said they'd give us more free stuff for Left 4 Dead, but they've decided to improve on every aspect of the original game in a sequel I'm going to have to pay for. Waah."
Well, you know what?
Turns out Valve have been working on new L4D content all along. So, when all those people were saying 'Dudes, trust Valve... When have they ever let us down?' all the whiney free-loading gamers should have listened.