Concentration Risk

9 Months Ended

Sep. 30, 2012

Concentration Risk

13. Concentration Risk

Arbitron is a leading media and marketing information services firm primarily serving radio, advertisers, advertising agencies, cable and broadcast television, retailers, out-of-home media, online media, mobile media, telecommunications providers, and print media.

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	%

The Company had one customer that individually represented approximately 19% of its annual revenue for the year ended December 31, 2011. The Company had two customers that individually represented approximately 19% and 10% of its total accounts receivable balance as of September 30, 2012, and two customers that individually represented approximately 23% and 11% of its total accounts receivable balance as of December 31, 2011. The Company has historically experienced a high level of contract renewals.