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I'm not sure why the question was deleted, however three of the four answers were low quality one-line answers. "user104" was (is) a former moderator whose account was deleted. I'll check with the other mods and if no objections will undelete the question - but probably delete a couple of the one-line answers.
I have resisted downvoting this, but I fail to see any real specific criticisms of the use of DNA for genealogy here. What are the specific warnings we should have here? We do not test DNA, nor do we actively promote DNA testing. DNA is a powerful tool for confirming or refuting genealogical relationships, and it is well established that any ethnicity estimates need to be taken with a large pinch of salt.
