Hey Skitter,
How to make them sign-up is the biggest question eheh, exciting them, reading about what more they can see inside is in my opinion one the keys. I like the style you used to tease your users but maybe you can try something a big more agressive playing with their fantasies ?
I just wanted to let you know, about your mobile traffic, you can try Mobidea platform it will help you to make money while you keep updating and working on your project
