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Concentrations (Tables)

3 Months Ended

Mar. 31, 2019

Revenue

Schedules of Concentration of Risk, by Risk Factor

The advertisers representing more than 10% of revenue are as follows (in percentages):

		Three months ended March 31,
		2018				2019
Advertiser A			18	%			27	%
Advertiser B			27	%			15	%

Accounts Receivable

Schedules of Concentration of Risk, by Risk Factor

The outstanding receivable balance for each advertiser representing more than 10% of accounts receivable is as follows (in percentages):

		At December 31, 2018				At March 31, 2019
Advertiser A			15	%		*
Advertiser B			31	%			35	%

*       Less than 10% of accounts receivable.

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- Definition

Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark.

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