I'm one of the founders of Cloudy (I submitted a post earlier and it didn't go anywhere, http://news.ycombinator.com/item?id=2227646), so feel free to comment with any questions or suggestions you have.
first, the app is really cool. love the idea.
personally, I'd lose the head shots and job titles from your about page. instead, tell us why you created this, how you got started, etc.
what are you doing with this data? do you have a privacy policy? this probably won't stop your growth, but it might encourage adoption if you let people know you aren't evil.
We have a privacy policy, but I'm considering writing a more prominent, "human-readable" version of it. We definitely want to make people feel comfortable and reassure them that we aren't evil.