For instance, one big problem is that threes are with threes, and eights are with eights. Just because you give them an email saying they have similar genes, you're not going to convince an eight to go with a three. (That's one of the biggest problems in today's dating services. If you could figure out how to make an eight go with a three, you could make billions.) Anyway, by far the biggest problem, one that no one has been able to solve, is that nines and tens are not on the dating service at all. (They don't need it.)

So even if you throw in genetics, the nines and the tens are still better off dating in their own circles. I'd imagine that the genetics are generally pretty good in your average Division 1 athletics department for instance. So a top 10 offensive lineman and a top 10 women's volleyball or basketball player would be very unlikely to find better genetics on any gene based dating service that I could create. In fact, it could be argued that the athletic departments themselves are already serving ss genetically gated dating services for elite genes. Stanford crew girl has a thing for Stanford wide receiver is a lot easier method of getting good gene sets together than testing millions of people and trying to make matches by computer that you hope the people will like. (And I'd wager that if we were to put together a dating service that tried to match good genes, the crew girl and the wide out would create superior offspring in any case. [I don't like using the word "superior", but you get what I mean.])

So adding genetic services might appeal to a subset of users, but it's not going to solve the main problems with your average dating service today. How to get eights to go with threes? and how to get nines and tens to use your service at all? Adding genetic services would only be doing a LOT of work to add a service that may appeal to a very niche slice of the dating market.