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Why I regret using 23andMe: I gave up my DNA just to find out I’m British | Technology | The Guardian
(www.theguardian.com)
This is a most excellent place for technology news and articles.
Honestly I've never gotten the desire to do one of these things. You give away arguably the most uniquely valuable and private part of yourself to this company (or companies like it) to do god knows what with in exchange for these results that are (IMO) ultimately just unnecessary trivia about yourself.