Does the site manage a wallet? Suppose two people come up with a bug fix, who gets the bounty? Who distributes the funds?
I see the vision, but not a clear mission statement. People are more likely to donate if there is some concrete set of goals. Here is my attempt at a mission statement:
I, genjix, run this website to facilitate the development of free open source software. I shall reward bounties to those who develop the most wanted and needed new features as well as bug fixes. I choose to focus my attention on the Bitcoin project.
Before using it for Bitcoin, why not use it for itself? Let other developers help you build your vision. As soon as your project is old enough to walk on its own two legs, it could be used for anybody's vision or project. Then, you just use it for Bitcoin and focus on that if that is your passion.
Awesome idea.