Quickly scanned through the threads, didn't see one like this one. I made the same thread wayyyy back in 2010, and it was quite popular. The rules are simple.
Pretend that the above two posters are in a perilous situation (i.e. hanging of a cliff) and you can only save one. Take your pick, and feel free to give a reason why!
Ex: Poster 3: I'd save Poster 2 because I don't like Poster 1's sig
Simple, no? Someone's gotta post after me to get the ball rolling, but after that, it's all downhill from there! Sorta punny?
Edit: Also, be fair, and obviously you can't save yourself.
Edit 2: OFF A CLIFF