Maybe it's because it's spring, but it's all teeshirts this week!
Here's Penny Arcade's latest, in reference to the pre-expansion WoW gear purple items (i.e Epics) being not-as-good as the post-expansion gear green items (i.e. Commons). You don't need to care, unless you're a WoWer at which point this will make you smile. In-jokes, don'tcha love 'em?