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Subsequent Event - Acquisition of Republic Project	9 Months Ended
Subsequent Event - Acquisition of Republic Project	Sep. 30, 2013
Subsequent Event - Acquisition of Republic Project
Subsequent Event - Acquisition of Republic Project	14. Subsequent Event — Acquisition of Republic Project On October 4, 2013, we acquired the assets of Republic Project, a cloud-based ad platform that enables agencies and brands to create, deliver and measure social and mobile rich media campaigns, for $1.4 million in cash and an additional earn out ranging from zero to $13.1 million based on reaching revenue and adjusted EBITDA performance targets in 2014 and 2015.