TBS and ESPN don't need no stinkin' ratings

And you can add other Turner networks to that list too, including TNT and CourtTV.

Nielsen is going to start announcing ratings for commercials, but the above networks don't want to accept them. But they're not the only ones. NBC Universal (well, it's cable nets like USA, Sci-Fi, CNBC, MSNBC, Bravo) is also waiting to see if they'll participate, as is ESPN. Cable networks are afraid too many mistakes will be made with the numbers, so they're waiting to see what happens.

Nielsen has tracked the ratings of TV shows for years, of course, but now with DVRs so popular, they're also going to start tracking who's watching what during commercials. They were supposed to start on Nov. 18 but it will now start in December.