Athletes at the 2012 Olympic Games in London will be playing by some new rules this summer. Women will be boxing for the first time, and runners who jump the blocks will be automatically disqualified. But the rules the corporate world will be watching most intently aren’t the ones that govern the events themselves.

During what’s been dubbed the first “social media” games, the International Olympic Committee is encouraging athletes to share their experiences with the world. Its social media guidelines suggest that they communicate “in first-person, diary-type format.” But the medal hopefuls will have to watch what they post, blog, and tweet because the IOC, as the owner of the Games (and author of the Olympic Charter), has set limits on what they can say.