Urban Dictionary had 15 million unique visitors in April
Street Smart: Urban Dictionary
That’s a lot of service from this exquisite and unorthodox resource, and it’s not atypical. With more than four million definitions submitted so far, and 2,000 more coming in every day, Urban Dictionary is a stunningly useful document that unlike most media is made and used by actual young people — in droves. The site had 15 million unique visitors in April. In a typical month, 80 percent of its users are younger than 25. The population with the biggest ego stake in slang — divining it, protecting it, practicing it, spreading it, declaring it over — actually creates and patrols the content.

