If you do the math, it's actually quite obvious that if your popularity contest for ideas inherently, by its structure, favors people who waste their own time, then your contest will produce winners which are actually losers. The most popular ideas will not be the best ideas, since the people who have the best ideas, and the ability to recognize them, also have better things to do and better places to be.
Regarding:
I want my blog banned from Hacker News. I'm not even kidding.
Suggestion: don't leave it up to News.YC to implement this. Set up a mod_rewrite, or even just a JS insert, which checks for a news.ycombinator.com referrer and bounces traffic to an error (or gross-out) page. Voila -- submissions will be rare, and those that are submitted won't be promoted.