Has Moved On

After 6 years and over 27,000,000 flags, 4sweep.com has shut down.

However, Foursquare has offered to continue hosting it at foursweep.com

The source code for 4sweep has been open sourced. It is available at Github via 4sweep's or Foursquare's 4sweep Repository.

Thank you to all of 4sweep's users.