I want to see a review app where upvotes are free but downvotes require a fee and a comment. 

In the real world there is this constant negative feedback because a happy user is not driven to provide a positive review/feedback. They simply enjoy the product as they expected to to begin with.

Negative reviews, however, are powered by a drive by the user to get retribution or revenge due to feeling duped or scammed by an inferior product. They would be willing to pay a trivial amount to leave such a review as well.

The idea is to help strike a better balance of real review ratios by adding a slight barrier to negative feedback while leaving the positive feedback path as obstacle free as possible.

Learn by doing, thats what I do best. Well, I learn by failing, but you fail by doing. I like to post my fails and learnings, so hopefully others can learn by m