I don't much care for SEO tactics, but hey - it's a matter of finding holes in an algorithm. Which is why I find smackdowns of this sort even worse:

Google hit back hard today after it learned lyrics site Rap Genius had been using dubious SEO tricks to attain top spots in search results. Now RapGenius.com doesn’t appear on the first page of results for a search of “Rap Genius,” and popular queries like “Jay-Z Holy Grail Lyrics” don’t bring up the startup like they used to.

Gosh forbid they figure out how to plug the hole; better to just pull out the howitzer and let fly....