It always makes me smile to see a submission like this.
- Solves an actual problem that people actually have.
- Charges money to solve that problem. Without apology or explanation.
My advice to anybody here who's currently building one of the four dozen photo tweeting services/Facebook cookie cleaners/thing-that-fixes-the-css-on-hackernews's that get submitted here every day: Stop. Then do what this guy did. Build something small that people will pay for.