I purposely do Google searches on obscure and not-so-obscure DQN memes with the intent of finding DQN users on other websites. I have a special file titled "DQN users" where I put links and screencaps of my findings. So far I've found three Livejournal users, a handful of myspace users, a couple facebooks, and the rest on various other websites.
Basically I'm stalking DQN.