Damn, this is very very tempting. Apparently the game wasn't very expensive to begin with ($29.99) but now it's only $14.99 until the 2nd!  
 
As for me, I'm considering picking this up. I never bought it on 360, but have played through the campaign with my friends. Hmmm.....decisions!  
 
Edit: and it has the new DLC crash-course! Ahhhh! 

buy it man, you won't regret it, its well worth the 29.99.

$15 is a great price but judging my personal experience (great yet very short and I lack the urge to replay the stuff), I will pass.

Looking back I thought $30 was about right for Left 4 Dead when I bought it quite a few months ago.  However with Left 4 Dead 2 so close, I would even skip this one.  It'll probably be a sweeter deal around the corner after L4D2 will have been out for a few months.

I own it on 360, but at $15 on PC I bought it, just now.
 
also, yay Giant Bomb is back.

Get it, we can play it...together...

I would get it if my processor was a little bit faster :(

" Looking back I thought $30 was about right for Left 4 Dead when I bought it quite a few months ago.  However with Left 4 Dead 2 so close, I would even skip this one.  It'll probably be a sweeter deal around the corner after L4D2 will have been out for a few months. "

Have you got the link because I saw it before and clicked away from it but now i've decided to buy it I cant find it, I live in England so maybe the time difference has screwed me over

Add 'girdz'. Tell me it's you in a message :D
Make sure you get L4D too, we can do some co-op =)

I bought it on the steam sale, I find it kind of hard to fill up a lobby to play a full campaign though. I usually have to start by myself and then let people join me midgame.