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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.
No, it really isn't much of a thing for the rest of the world. You'd never see someone from, I dunno, Poland saying they're Irish because 23andMe says they're 2% Irish.