The rule against gambling in baseball is known as "Rule 21," which is publicly posted on dugout walls and states: "Any player, umpire, or club or league official or employee, who shall bet any sum whatsoever on any baseball game in connection with which the bettor has a duty to perform shall be declared permanently ineligible." People permanently banned from Major League Baseball are also forever banned from entry into the Baseball Hall of Fame, although most such people have been reinstated a few years later by a later Commissioner of Baseball. For instance, Mickey Mantle and Willie Mays were both banned from baseball in 1983 after taking jobs as casino greeters (which would have expelled them from the Hall of Fame had it been allowed to stand); they were reinstated two years later. Only Rose has yet to be reinstated.
Spread betting are wagers that are made against the spread. The spread, or line, is a number assigned by the bookmakers which handicaps one team and favors another when two teams play each other and one is perceived as being more likely to win. The favorite "takes" points from the final score and the underdog "gives" points. This number can also be in increments of half-a-point (.5) even though very few sports have .5 point scoring (i.e., The Ryder Cup)
Another important source you can use to research online betting websites is social media. Every trustworthy online gambling site should have a presence on Twitter and Facebook as a valuable customer service tool. Following and/or “Liking” the sports betting site enables bettors to see how the company communicates and interacts with potential and current customers, giving them another level of trust and the necessary knowledge needed to make the right decision when the time comes to choose one. If a book is very responsive on social media, you can see that they really care about their customers and want to resolve issues in a timely and efficient manner.