Nielsen (NLSN) is expanding its measurement of Twitter (TWTR) conversations about TV shows in effort to give a fuller picture of TV-viewing habits. While Nielsen has already been tracking social TV conversations since late 2013, it's been focused on Twitter activity around the live airing of TV programs. But now, Lisa Berman, vice president of research and marketing at Nielsen Social, said that will change in the coming months as Nielsen starts measuring all activity surrounding both linear TV and over-the-top programming on a 24/7 basis. Nielsen Social has access to each TV show airing on 250 networks and every tweet regarding the shows, according to Berman. TV networks are among its more than 90 clients for the social TV data, along with advertisers and ad agencies.

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