Um. There are certainly smart people in the Reddit crowd, but the average is decidedly sub-par. For that matter, HN is a pretty good site as far as scientific discussion goes, but it's still total garbage compared to a grant review panel.
If you want to be viewed as a source of legitimate scientific funding, you need to solve the credibility problem. If you get tagged as the funding source for crackpots, you'll never shake the rep.
i wouldn't underestimate regular people, these redditors are pretty smart: http://www.reddit.com/r/science