Mobile advertising firm Millennial Media announced the completion of a Series B financing round totaling $15 million. The round brings Millennial's 2007 funding total to $21.3 million and was led by Charles River Ventures, whose George Zachary was also appointed to the company's board of directors. Millennial said the latest cash infusion is earmarked to support sales and international business development. 

For more on the Millennial Media funding:
- read this release [1]

Related article:
Millennial [2] expands mobile ad offering