CNBC: Ralph Nader is at it again. No, not running for president, but rather slamming Liberty Media CEO John Malone as Charter Communications signs a deal to buy Time Warner Cable in a $55 billion cash and stock deal. “Let’s put it this way,” Nader said on CNBC’s “Fast Money,” “John Malone became a multibillionaire not by being known as a consumer advocate and a believer in competition. This is all about concentrating power in eventually three giant cable companies that will control the bulk of cable business in this country.”