Apparently, this was inspired by a scene in Lost in Translation, in which a bemused Scarlett Johansson and Bill Murray are introduced to Tokyo's nightlife by some young Japanese people they meet. The site is designed to help visitors hook up with locals wherever they are in the world. Currently free to use - though the site's directors suggest it would be polite to cover your insider's expenses - you can search by destination and interest.
Like that? Try www.like-alocal.com