While we're watching our favorite shows in HD, it's easy to forget that they live and die by ratings, and those ratings aren't always collected with the latest technology. In an effort to improve the sample size and accuracy of ratings for local TV channels, Nielsen is starting to roll out a hybrid technology consisting of watermarks and return data from supporting pay-TV provider's set-top boxes, like DirecTV and Charter. The first three markets to get the upgrade are St. Louis, Dallas and Charlotte, with 17 yet to be announced markets to follow in 2013, and finally, the remaining 190
