, a provider of online video advertising, has raised $4.5 million in a third round of funding. Existing investors Redpoint Ventures, Gemini Israel Funds and Spark Capital participated in the round, according to a filing with the SEC.

Based in San Mateo, Calif., provides publishers with an ad serving platform for monetizing videos. Last week, the company announced that comScore ranked it the third largest online video property based on video advertisements. reached more than 60 million unique online viewers with more than 440 million video ad views last month.

Founded in 2007, previously raised $10 million in 2007 and $13 million in 2008.