I noticed that 'Top Ideas' page ranks ideas by the number of 'Awesome idea' votes. The number of 'This sucks' votes aren't taken into account. You should change this to take downvotes into account as well. +4/-20 (0.167 approval rating) should not be ranked higher than +3/-1 (0.750 approval rating). [1]

Also, seeing as the site is titled 'HackerIdeas', you should target it specifically to hackers. I don't care about a company that prints advertisements on toilet paper. That's just annoying.

[1] Approval ratings calculate using this formula: up / (up + down)