Mobile Posse is a mobile advertising firm that claims to deliver targeted advertising, as well as “idle screen interactive content delivery,” which takes advantage of the time a customer is not directly using a phone to display ads.

The McLean, VA company recently signed on with its first carrier, Revol Wireless, an operator in Ohio with about 250,000 customers.

Softbank Capital led the $10 million second round, with Court Square Ventures and Columbia Capital also participating.

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