Ad network optimization firm The Rubicon Project has partnered with online ad market AdJug.

Per the agreement, AdJug will sell ad inventory for US-based Rubicon clients that wish to target the United Kingdom.

The Rubicon Project recently launched Certified Ad Space, a verification program for "[ensuring] safety and accuracy for ad networks." The program matches a publisher's inventory to the strengths of different ad networks, segmenting them by geographic, demographic and contextual ad-placement capabilities.