Right, I'll admit that I've not been following this. I almost bought L4D from Steam about a month ago when the sale was on (they had a cheap weekend or something), but I didn't. However, if I had bought then, I'd be majorly pissed now. L4D was promised support like Team Fortress, and I was aware of that when I almost made my purchase. Everything in L4D2 is what was promised for L4D. I fully understand why people are upset, and would be one of them if I'd bought the game last month. Valve have not been up-front with their intentions here; I would certainly have never considered L4D if I'd known L4D2 was coming so soon, and L4D would become, by default, the inferior game. They promised one thing, then did another. Sure, many won't care (and most of those will by 360 gamers, I imagine -- PC gamers are used to a very different gaming environment to console gamers), but many will care, and will be upset, and I fully understand that, even if I am not one of them (although I almost was).
And the Steam group has over 12,000 members now. It's increasing pretty fast.







