Picnicmob is looking for someone... just like you! Participants are asked a set of questions, then given a spot in a public park where they'll be near others who share their interests. When enough folks particiapte (the site is shooting for 1,000 per city), a map is generated and an email sent announcing the day of the picnic (always at noon on a Sunday). An interesting concept, and if nothing else - a good excuse for a picnic.