You may not twitter Olympic news if you are at the Olympics

Is it just me or are the brand protection rules around the Olympics just there to make sure nobody upsets McDonalds and Coca-Cola?

Competitors may write only "first-person, diary-type" entries but should not act as reporters… Postings deemed to be for commercial purposes will not be permitted.

Right, so what if an athlete posts to their website running Google AdSense? What if their tweet becomes news thanks to it being quoted by a blogger who’s story is then lifted (without credit) by the Daily Mail? And how do you define what a reporter is? Or is this a nice public face saying "yes, people can tweet" while actually locking down the actual content?