Revenue/Income sources? Traffic organic or not?
The total income of the app so far is less than 10 BTC. Most users find us with facebook search (was google before) and through recommendation of other users (there is an "inform your friends" button on the site).
The potential you have is the contact to more than 1000 (daily increasing number) users via email. The current options to generate income is banner advertisement and advertisement through email.
You should be able to "program" php and to improve the "design" of the site in order to profit from owning it.
I feel that most of the users that start using
bitcoin-app.com are new to Bitcoin (just an impression, no way to prove this..).
Does this answer your questions?