If you're a good punter. I mean really good. You must have a competitive advantage over the bookies. This week we spoke to professional greyhound punter Mark from Victoria, a.k.a Lidpingers, who provided us with one of the most revealing insights into the methods he uses to obtain and maintain an advantage over Australian bookmakers. Interestingly, he obtains part of that advantage from the most basic statistic found on every punter's form guide. Most punters who proof their bets at theGreatTipOff.com are eithe.....