Rubicon Raises Another $13 Million; Total Raised $33 Million

Online ad optimization firm Rubicon Project has announced a new $13 million venture raise today made up of  an additional $5 million in venture funding from Clearstone Venture Partners, Mayfield Fund and IDG Ventures Asia and Silicon Valley Bank added $8 million in venture debt. The company notes that the funds will be used to, "fuel business growth initiatives including strategic acquisitions, research and development, infrastructure and international expansion."

The company has raised $33 million to-date and is based in Los Angeles. The company opened a NYC office last November. Check out our interview with founder and CEO Frank Addante.

I wonder if any of the money will be focused on increasing publisher revenue for small-to-medium websites. To-date I haven’t heard from any publishers in that category who have seen good results from using Rubicon. The service seems to work well for large publishers, but optimizing those are relatively easy. Especially to get them from where they were to a new level – it’s seeing continued growth that’s more difficult.

One of the things I like that Rubicon does is provide their Ad Market report each quarter. While the data only comes from publishers using their system, it’s a great way to keep their name top-of-mind as some amount of bloggers will post findings from the report each quarter.