I would have expected to gain some knowledge about what ALL girls are like. However the main thing that I have taken so far from this site is that you can't generalise a lot of things to do with girls. For example, not all girls care if a guy is a virgin or not!!
I learned there are a lot of angry men upset with the size of their penis, who hate women and just like to argue and many girls seeking approval from strangers for their appearance but aren't outdone by some insightful, genuinely helpful and kind people out there on the interwebs.
I learned that I'm glad I don't know most of these people in real life.
among other things i can't remember now, that short guys are insecure about their height. I'm tall and never gave my height a second thought. and none of my short friends ever expressed insecurities about their height before. so it was new to me.