Volunteers at this year's Summer Olympic Games in London are going to be subject to some pretty stringent restrictions on their use of social media, reports the BBC. London 2012 "Games Makers" won't be allowed to reveal their location, post backstage photos or give any information about the whereabouts of VIPs. They are also restricted from speaking to the press without permission, or engaging in "detailed discussion" about the Games online. UK sports stars are used to such restrictions during major events — the England soccer team was banned from Twitter during the 2010 World Cup, for example — but this is the first time we've heard of such clampdowns extending to people off the field.