The initial reports only account for 25 ethnic groups, but that should grow to 100-plus over time. Also, MyHeritage is jumpstarting its DNA library by giving away 5,000 free testing kits to existing members. Even if you're an early adopter, there will likely be some point of comparison.

Of course, ancestry-oriented gene testing is nothing new -- 23andMe revolves around it. However, MyHeritage is counting on both its existing genealogy customers (it has 85 million registered users) and its higher-resolution tests as ways of beating rivals. If you can settle the question of where your origins lay with a high degree of precision, you might be more willing to fork over cash.