The idea is well executed, very slick, but I'm not sure how this site would help me discover fun new things as the friction is high (eg, have to remember your site first) - I'd almost want some sort of slide-like toolbar that scrolled apps with their descriptions at random at the bottom of my computer screen (yeah, that's distracting, but if I were into trying lots of different apps and had more time, that might be fine)
One more thing - you have the main headline "Discover great apps for your Android Phone" and a little below in green you say "Also available on Android" which seems unnecessary?
edit: I think my mistake might be that I was using it on my mac instead of using it from an android device (which I don't have) - so that use case makes more sense....