UPDATE 2:05pm EST/6:05pm GMT Everything should be back to normal now.
UPDATE 12:43pm EST/4:43pm GMT We’re working through our backlog now, so sharing to Twitter/Facebook, photo uploads, and emails/notifications should be back to normal soon!
12:00pm EST/4:00pm GMT Due to backed up queues, check-ins and other Foursquare activity are currently not being shared to Twitter or Facebook. We’re working to fix the problem, but you might notice older check-ins popping up later. Sorry for the inconvenience!