As I have been talking about for quite some time:
If you ever doubted the power of the credit card companies, consider this: Visa, the world’s largest credit card network, can predict how likely you are to get a divorce. There’s no consumer-protection legislation for that.
How much do you want to wager that credit card companies will be a lot more successful at matchmaking than any personality test?
Visa denies that they track maritial status. Riiiight. Read How Visa Predicts Divorce at The Daily Beast.
Keep an eye on Hunch as well. Recommendation engines are getting a lot of press right now. Expect some of these systems to show up in dating sites sooner or later.