The service that everyone loves using for telling their friends and family where they are, Foursquare, is down. Some users have been reporting that they found their accounts had been deleted or not accessible. After we checked https://foursquare.com around 10 minutes down with the following screen.
After I finished writing and taking screenshots, Foursquare is now up and accessible. I checked my phone and was able to checkin at a local supermarket, so for now, everything is back online. We will update you when we find out more.