A friend is someone who turn around and see if you are still around.
A friend is someone that go back to help you when you aren't.
A friend is someone who keep playing with you even though you keep making mistakes.
A friend is someone who doesn't fire back when you accidentily shoot them.
A friend is someone who never take your medkit without asking, and always share their own when you need it better.
Luckily for me I have a whole bunch of very good friends to play L4D2 with. That's what keeps me coming back over and over, and I won't stop before I am dead for real.

I just wonder why most people just run through the maps in L4D2? There are so many areas in each map we never get to explore that way. Don't you guys LIKE the game? If you don't; stop play it. And if you do, why the rush to make it end?