Forbes.com has a list of weird things you're not allowed to do at the Olympics in London.  It's kind of interesting, even if you're not going.  Here are the top six.

#1.)  You Can't Share an Internet Connection.  You're not allowed to use mobile hotspots.  And if your cell phone can put out a wi-fi signal, you're not supposed to use that either.

#2.)  You Can't Take Pictures and Sell Them.  You have to agree not to when you buy a ticket.  And if you tape something and post it on YouTube, it'll get taken down. 

#3.)  You Can't Play Bagpipes.  You're also not allowed to use whistles, drums, or rattles.  And unlike the World Cup in 2010, vuvuzelas aren't allowed either. 

#4.)  You Can't Write Something Negative Online When You're Linking to the Official Website.  According to the terms and conditions, you can't say anything that's, quote, "false, misleading, derogatory, or otherwise objectionable."

#5.)  You Can't Pay with Your MasterCard.  When you're inside the Olympic grounds, you either have to use a Visa card or pay cash.

#6.)  You Can't Go to an Event and Hold Up a Country's Flag if They Don't Have Athletes Competing .  The only exceptions are Scotland, Wales, and England.