A generic social network would work, where users can verify against one or many domains or sets of urls. To reach someone's page, you would type in: site.com/ve

A generic social network would work, where users can verify against one or many domains or sets of urls. To reach someone's page, you would type in: site.com/verificationstring edit: the string would have to go in the <head> otherwise it can be faked on ugc sites