Hi,
Betting on the Olympics and winning is a very hard thing to do. I explain a little story about why.
Back in 1996 Centrebet, an Australian Bookmaker, offered betting on the Atlanta Olympics as a bit of fun and never thought anyone would be interested. The book got hammered by a number of smart people and lost quite a bit on the Olympics. Ever since they have employed experts to study form over the past 2 years for every event and set to the odds for the Olympics and it has being increasingly harder to find value.
I tried my luck in the 2000 Olympics and lost money because I didn't have enough knowledge of certian sports and backed too many favorites. If you want to place a few bets for fun that's fine but don't expect to make money out of it. I learnt my lesson in 2000 and will have few, if any bets on this Winter Olympics.
If you want a prediction of possible placings as guide for betting visit:
CBS Olympic Predictions
Craig