It wasn't just Christmas, kiddos: Google's swift and merciless de-listing of Rap Genius has sent the site's traffic even further towards oblivion, as shown by the newest numbers out of Quantcast.

Since Yahoo! decided to buy itself many million cool, popular teens, we've been wondering just how much the billion dollar purchase is working out. Are they clicking ads? And more importantly, just how popular did Tumblr make its historically square parent company? It was murky before, and now they're making it even more opaque.