The betting exchanges are prevelant within the industry and can offer as much as 20% better odds on the majority of sports. On the higher priced selections for example, an opponent of Federer in Tennis, you can obtain as much as 200% higher odds than the standard bookmakers. All of the three major exchange players are listed below, and offer super introductory bonuses. Betfair only give the introductory offer if you should lose your first bet, so depending on which way you look at it, it's eith a risk free bet or a nice traded cash bonus!! Good Luck, and make sure you join all three exchanges to help get you on your way.
WBX Offer a free £25 first matched bet offer and are one of the leading Betting Exhanges. Good service and prices very good, though obviously as at going to press in late 2009, still lacking liquidity.
Betfair are the premium Betting Exchange with only Betdaq coming close to them. The liquidity on all sports is exceptional and they also offer a first time £25 free bet. Be Careful though, the bet has to lose to make you receive the free £25. I am sure you don't need me to explain that with a duplicate account with Betdaq, this is a great starting point to get yourselves started in credit.
MamboBet.Com
