Nielsen to Measure Twitter Chatter About TV Shows

October 6, 2013 - Only 98,600 people wrote messages on Twitter about the two-hour season premiere of "Grey's Anatomy" last month. That's a tiny fraction of the 9.3 million who, according to Nielsen, watched the show that night.

Two episodes of NBC's "The Voice" ranked in the top 10, reaching 3.8 million and then 2.7 million accounts.
But the posts, 225,000 of them in total, were seen by millions of Twitter users, some of whom might have fired up their digital video recorders or laptops to watch the episode later.