Welcome to Online Sports Betting & Online Sportsbooks. Here you will find a complete guide to sports betting online including our sports betting dictionary. In addition, we have compiled a list of the best online sportsbooks and casinos now available on the Internet. Simply click on a hyperlink that you would like to visit and we will direct you there. Top Online Sportsbooks Sportsinteraction.com Sportingbet.com - The World's Leading Sportsbook. Up to $75 for new accounts. bet365 USA Sportsbook Online Sports Betting Dictionary: Sports Betting terms and events defined. Online Sports Betting Guide Point Spread Wager: Point spread wagering is only offered for Football and Basketball. Money Line Wager: Money line wagering is offered for all four major sports. Over/Under Wager: Over/Under wagering is offered for all four major sports. Run Line Wager: Run Line wagering is only offered for Baseball.