Enterprise-Wide Information

12 Months Ended

Dec. 31, 2011

Enterprise-Wide Information [Abstract]

Enterprise-Wide Information

16. Enterprise-Wide Information

The following table sets forth the revenue for each group of services provided to our external customers for the years ended December 31, 2011, 2010, and 2009 (in thousands):

	2011		2010		2009
Radio audience ratings services	$	340,479	$	317,606	$	307,217
Local market consumer information services		35,173		35,187		34,991
Software applications		35,676		34,138		33,809
All other services		10,982		8,448		8,935
Total revenue	$	422,310	$	395,379	$	384,952

The following table sets forth geographic information for the years ended December 31, 2011, 2010, and 2009 (in thousands):

	United States		International(1)		Total
2011
Revenues	$	415,869	$	6,441	$	422,310
2010
Revenues	$	390,424	$	4,955	$	395,379
2009
Revenues	$	379,055	$	5,897	$	384,952

(1) The revenues of the individual countries comprising these amounts are not significant.