Everyone is so fixated on the price. What I want to know is, who they share the data with? Do the insurance companies get our genome? Come on people, there should be no more precious data to you, than the genome of you and your family. Yet facebook users seem more concerned about their social network privacy than HN members are about their genome privacy. For insurance companies, this could be a total actuarial GOLDM…
Also, quite a few people have been posting their data openly, for example here: http://opensnp.org/ . So far I am not aware of any adverse effects. Not saying there won't be any ever, but I would be a lot more paranoid about my browser history.