Annalee Newitz bringt's bei AlterNet auf den Punkt:

What I see when I look at a site like 23andme is nothing less than the future of eugenics. I don't mean the scary capital-E eugenics of the 1930s that involved killing Jews and sterilizing "loose women." I mean wild-type eugenics, the kind of genetic engineering that happens in nature without any dictatorial intervention. It's the sort of eugenics that results when people of the same races and classes tend to marry each other. (...) But you can bet that once these companies amass tons of genetic data, they're going to want to do something with it. After they sell it to insurance companies -- who will use the information to charge higher rates to people with "bad" genes -- they'll sell it back to users in the form of social networks. Or the users themselves will post their data for all to see, the same way they already cluelessly post pictures of themselves passed out naked on MySpace. And out of that data will arise the first dating service based on genome compatibility. And what is genome compatibility but eugenics? While newspaper stories about the new personalized genomics services trumpet the arrival of the future, I see nothing but the past. This isn't science for the masses; it's not enlightenment. It's just the same old crap dressed up in the language of modern biology and tricked out with a zoomy Javascript interface.