People are scamming the city's parking machines to the tune of $1 million per year. Apparently you can use an expired pre-paid credit card to park for free because the machines don't check to see if the cards have credit left on them. The Toronto Parking Authority has known about this since 1998, but hasn't done anything because what the hell—it's only money. Federal industry minister Jim Prentice isn't happy about cellular companies charging......