(It may seem late) but i just picked up Left4Dead! Today was my second time playing, and it did not go as well as my first run. I joined a game that was already in the middle of the last level, and i had low health. I died about twice, and on my third rescue, i was waiting for this to happen, and was watching a video, and didn't realize that i had been rescued until about a minute afterwards. And by that time everyone was dead, and i got totally annihilated by the horde. Everyone kicked me. Just thought i'd share.