If you've had trouble explaining the pros and cons of direct-to-consumer genetic testing to your family, this will help: the Indianapolis Star has a story on the budding field, featuring interviews with people who have signed up for these services as well as with scientists. The story quotes Indiana University geneticist Gail Vance as saying, "People need to understand it's an evolving science. ... The test could be underestimating or overestimating risk based on the studies available now. That's one of the biggest risks."