Nielsen Adds More Cellphone Tracking

Since we last reported on Nielsen, they’ve now purchased Telephia, a private firm that is one of the most respected sources of data about cellphone use, according to the New York Times – tracking consumers’ phone calling, mobile Web surfing, video viewership, and so on.

“We follow content wherever it goes across all platforms, and this is a really significant step forward in measuring content across mobile platforms,” said Susan D.