As to another idea in the survey, it seems like a lot of the easier to match algorithms have been beaten to death. I do think there's an overall 'type' to most folks that can be matched - the trick is doing it accurately and without offending too many. Perhaps a way to label types behind the scenes without it being public-facing, a bit of a black box approach.
The only other downside, as with any dating service, is if your algorithm works like it should, you'll remove your client base within 6 months to a year. Getting the critical mass is going to be a huge issues as well - perhaps if you made signup transparent (although NOT FACEBOOK), it might play well. From what I've seen of the facebook meets dating sites that pop up, they're usually "pick your friends that you're interested in, and they'll do the same, and then bam!" I think most people are skittish of mixing the two networks. Maybe a google sign in that's kept anonymous on the site, that'd be the least intrusive. If you want the tech crowd, try doing it in a chrome app perhaps?
Good luck!