Dienekes takes a critical look at 23andMe's new "global similarity" tool (requires a 23andMe login or a demo account to view), which allows you to visually place your own genetic data in the context of genome-wide SNP data from over 1,000 individuals from around the world. The take-home message: the feature is an improvement over previous versions of 23andMe's genetic ancestry tool, but it still needs plenty of work.
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I have never been very interested in the Y/mito ancestry stuff (who cares about where one of my many, many ancestors came from?), but this I find pretty exciting. I have been waiting for this ever since the ancestry mapping papers came out. It has made me want to test my grandparents as soon as possible.
It may sound silly to be so excited about this, but I am an american mutt and it is pretty cool to finally have some information on my ancestors.
I agree that this is a bit rough in its current stage, but still it's so fun!