Here is some basic info: Betting exchange is a peer-to-peer gambling website acting as a broker between parties for the placement of bets. Let's say I want to create a site that matches two sides of party who hold opposite views in financial market(such as Dow Jones Index). And the odds are privately negotiated by both parties. The only function of my site is to provide a venue for users. Is it still considered as gambling? Does it require any casino license for operation? Answers should include some references, preferably with links of sources. Your help is much appreciated. You are also welcome to submit your answer in http://www.ansmart.com/view.php?qid=1201003436&uid=1154908724 I am too busy to do it on my own.....you can go to the link I provided above to submit answer so that your effort is compensated ...and of course I wouldn't mind to receive a free answer here as well