Under this agreement, Nielsen and Twitter will deliver a syndicated-standard metric around the reach of the TV conversation on Twitter, slated for commercial availability at the start of the fall 2013 TV season.
Nielsen and Twitter Establish Social TV Rating
Two thoughts:
1. This is the future of Twitter as it itself intends it to be. ‘We are big and we make bilateral deals.’
2. Did Nielsen forget about Facebook?
https://newnetland.com/2012-12-under-this-agreement-nielsen-and-twitter-will/