The WSJ just blogged about a recent internet privacy study implicating several high-traffic sites of selling user information to third party SEO companies. Sites include OKCupid!, RottenTomatoes, and yes, the Wall Street Journal herself.
Nothing new here, but note WSJ’s clever loophole: they don’t sell users’ email addresses; instead, they sell email addresses used in failed login attempts, meaning that potential privacy issues are squelched because the addresses they sell are technically not attached to any users.