Our attention has been drawn to an article about the privacy issues surrounding DNA tests: read it here.   

We understand that an update, on the whole subject of DNA testing, is planned.

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Of course, AncestryDNA's terms and conditions may have changed since the first article was written, but nonetheless you may still wish to refer to it (and follow the links from it) — and "read the small print" — before you decide whether to use such DNA testing services through Ancestry (or indeed any other organisation).