Home genome kits, at this point in time, are likely to confuse people at best and confirm their prejudices at worst.
I'm not saying people shouldn't buy these kits, or that they won't be useful one day, when we understand our genomes better. I'm just saying we shouldn't use them to understand our places in society. Certainly we shouldn't use them to find genetically compatible friends. But I'm pretty sure we will.
Annalee Newitz is a surly media nerd who thinks your genome isn't worthy of hers.