For non-Twitter users:

EDIT: "To get a score at the end, you need about 20 ratings in a category. To get ratings: play, rate, and leave feedback on games. Every game you rate and leave quality feedback on scores you Coolness points. Having a high 'Coolness' prioritizes your game."

EDIT 2: Feedback Friends and this tool might help find entries in need (tool source). The numbers from @avavt's tool don't seem to add up, not sure why.

Source