Concentration Risk (Tables)

3 Months Ended

Mar. 31, 2013

Quantitative Radio Audience Ratings Service and Related Software Licensing Revenue Accounted Aggregate Percentages of Total Company Revenue

The Company’s quantitative radio audience ratings service and related software licensing revenue accounted for the following percentages, in the aggregate, of total Company revenue:

	Three-Month Period Ended March 31, 2013			Three-Month Period Ended March 31, 2012
Quantitative radio audience ratings service and related software licensing revenue		95	%		96	%