Concentration Risk (Tables)

9 Months Ended

Sep. 30, 2012

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			Three-Month			Nine-Month			Nine-Month
	Period Ended			Period Ended			Period Ended			Period Ended
	September 30,			September 30,			September 30,			September 30,
	2012			2011			2012			2011
Quantitative radio audience ratings service and related software licensing revenue		94	%		95	%		91	%		91	%