Business Week: A Researcher Needed Three Hours to Identify Me From My DNA by Kristen V Brown:
Using just my DNA, a genealogist was able to identify me in three and a half hours.
It wasn’t hard. I’d previously sent a DNA sample to the genetic testing company 23andMe Inc. and then uploaded my data anonymously to a genealogy website. Researcher Michelle Trostler was able to access my data from that site and spent an afternoon looking for connections that would help her put a name to my data.