i think the Addictionary is set up for different communities. addictionary.org is set up for word-lover who don't want all the smut in urban dictionary. But I've also seen http://politicaladdictionary.com for lovers of politics, http://officeaddictionary.com for fans of the office, http://tennisaddictionary.com for tennis fans, etc… and I'm pretty sure it's the same software/company. Language is specific to community, it seems, and the Addictionary is set up to enable each community to have control of their own lingo, language and wordplay. kinda cool.