1.Rating, commenting, and the ability to start gaining points
2.a couple of account baised games but sherly not flash games ever
3.no,but i see where you are going with this and maybe some of your more popular arcade games would be big sellers like monster truck 2 or something kinda like a phone i would totally buy an ipod touch app(if i had one)
4.maybe a sticker
5.I could live of of bacon or pizza for the rest of my life making them my favorite