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I actually think this is huge. It's a total 'geek' feature that could potentially drive traffic. I think those are, hands down, the best kind and can be sleeper hits for generating value and engagement for the site. Or it could do nothing at all, haha. As you said, the nature of the traffic it could generate needs to be watched and probably tweaked, but possibly one of the better updates, even though I think it will have very limited adoption for possibly a while.