Ooh, this is such a good point that I hadn't thought about. You would want everyone related to you to do this, too. And of course, no matter how hard you work,

Ooh, this is such a good point that I hadn't thought about. You would want everyone related to you to do this, too. And of course, no matter how hard you work, you won't be able to catch dad's secret attic family, or your surprise second cousin. I'd like to impute more health and longevity goals to 23andme than just imagine it's a giant government DNA-gathering corporation. But, I bet you're right -- it's just not tenable to hide enough information about myself AND all my family members that I couldn't be ID'ed by a junior data scientist / low-end neural network.