Fnord wrote:
The data can be used to track you down. Remember that wild party when you woke up the next morning in bed with a strange woman? Well, surprise, daddy! A child was born about 9 months later, and he or she looks exactly like you!
It can also be used to track down a relative through you -- a relative who may have committed a heinous crime 20 years ago, and who has kept it hidden from everyone until now.
the site indicates me some people as close matching, but they only find two who could be 3rd relatives (an old woman in Canada, who also has the same surname as my grandmother, and a guy in Brazil) and other more distant people.