Westlake Village-based ValueClick, the online advertising firm, said today that it has named David A. Yovanno as its new General Manager for its Mediaplex division. Yovanno was most recently CEO of Gigya. Yovanna had previously been at ValueClick, having served at the company from 2000 to October 2008, prior to his time as CEO of Gigya. Yovanno will report to CEO Jim Zarley. Mediaplex is ValueClick's technology division.