woot.com having a woot-off with the same dumb item repeatedly (I ended up removing them from my Twitter feed because I was sick of seeing yet another notification for OMG HILARIOUS TWO-PACK BATTERY!!! every 5 minutes).

xkcd, questionablecontent, and qwantz showing up on each others' domains

lulz internets u r funny
busy bees buzz | sockpuppet revolution