Yep, I agree with that, social networks are definitely the key. My Alpha Blitz game got 60+ downloads on iOS for the first day which may have been down to MonoGame retweeting me.
I think we need a bit of luck to get on the radar though, eg. A random front page on a high traffic site. My strategy is to get as much (decent) games released on both platforms as possible and hopefully one of them will get noticed.
I’ll probably email some more review sites on that Holy Grail list and maybe catch someone in a good mood, fingers crossed 