Blinded by science in the online dating game - NYTimes.com

I’VE been checking out Internet dating sites recently. No, I’m not in the market (although my husband is a little suspicious of all this “research”). But since many of my friends use them, I was curious. And because everyone is looking to save money these days, I wanted to know if some sites were more effective — and therefore a better investment — than others.

I didn’t know then what a Pandora’s Box I was opening with that question. The competition is fierce among companies to prove that their particular method is more scientifically valid. There’s everything from hourlong compatibility questionnaires to DNA testing...