Twitter TV Ratings: January 21, 2014

ABC Family's hit teen drama PRETTY LITTLE LIARS dominated the Twitter scene on Tuesday night, grabbing over 4.7 million unique users and generating nearly 31 million impressions on 637,000 tweets. The next closest program, TEEN MOM 2 on MTV, drew less than half as many users and just 25% of the impressions.

The NFL Network makes a rare appearance on the chart, with it's start of a new format for the NFL Pro Bowl. The Pro Bowl Draft, conducted by Dion Sanders and Jerry Rice hauled in about 1.3 million unique users.

Activity metrics (Unique Authors and Tweets) are a measure of relevant Twitter activity from three hours before, during and three hours after an episode’s initial broadcast, local time. Reach metrics (Unique Audience and Impressions) measure the audience of relevant Tweets ascribed to an episode from when the Tweets are sent until the end of the broadcast day at 5am. The data includes new/live primetime and late fringe episodes only and excludes sports events.