[khomenko]

It's OK. Nobody gets your genome. It would be suicidal for them to share, plus there are laws on the books (GINA at the federal level, a stronger law recently passed in CA).

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.