Brightkite was once a location-based social networking service provider where users shared their locations by checking-in. This dataset contains interactions among the users as well as the check-in location of each user. Data file:

• brightkite.zip

If you use this data, please cite the following paper

• Friendship and Mobility: User Movement in Location-Based Social Networks.
  E. Cho, S. A. Myers, J. Leskovec.
  Proceedings of KDD, 2011. [bibtex]