OpenX Technologies, an open source advertising community that helps online publishers make money,
has just announced a $10.4 million third round of venture funding, bringing total investment in the company to nearly $31 million since mid-2007. The company's technology
lets publishers manage a mix of ads from multiple networks across a web site, and competes directly with Google's Ad Manager. Palo Alto-based firm DAG Ventures led the round of financing, and
GigaOm has more on OpenX's plans here.?