Wish I could buy it, but I can't buy shit with the credit card attached to my paypal, and Valve is retarded and doesn't accept paypal bank transactions backed by a credit card. Gotta directly use the stupid CC.
Do it. The game is repetitive and gets old fast, but for $7 you'll definitely get your moneys worth.
There's a L4D bundle that includes both games for $10, an even better steal.
I LOVE the campaign levels from the first one, spent many nights up with bros playing through it on the 360 when it came out. For a little under $4, definitely worth it to play through those awesome levels on PC now... =D
the "This occurs after you have posted 5 messages on the forums. Your account will be automatically upgraded to 'Newcomer' within the hour, unlocking additional features such as posting links and more." message wont go away