Nbc: NBCU Says New Nielsen Measurement Product Not Ready for Release

The long-running war of words between TV companies and Nielsen escalated this week when Comcast Corp.-owned NBCUniversal sent a letter to the ratings giant raising concerns about a new measurement product.

The service, called Total Content Ratings, promises to measure audiences in areas outside the traditional “linear” TV ratings system, like subscription video on demand services and on mobile devices.

The TV industry, which has seen traditional ratings fall as eyeballs shift to newer platforms, has long called for such a product, often criticizing Nielsen for failing to keep up with shifting media habits.