Foursquare is a free app that helps you and your friends make the most of where you are. When you're out and about, use Foursquare to share and save the places you visit. And, when you're looking for inspiration for what to do next, we'll give you personalized recommendations and deals based on where you, your friends, and people with your tastes have been.

Four Square website

Name: Four Square
Type: People
Urban trend: Crowdsourcing, gamification, urban data
Status: Very active
Created by: Entrepreneurs
Created for: People
Works: Top-down and bottom-up
Accessibility: Moderate