Just to share a positive from 23andMe, given all the bad press around here.<p>I got on this service a couple years ago. I am adopted and had spent a long time trying to track down one side of my biological family. I had very little to go on other than a first name and general whereabouts 40+ years ago.<p>As it became more popular, I had half siblings and, eventually, my biological father reach out to connect.<p>Its been great knowing I have that connection finally. We're planning to meet soon.<p>This is a huge benefit of this kind of "opt in" service, but I recognize how devastating it might be if someone was concealing my existence for, say, religious reasons and a data leak or loose privacy settings from a common relative revealed something.<p>It's a nuanced issue, but my experience has been immensely positive in that it gave me something I may never have had.