Rank: 13 (Previous rank: 5)
Employees: 1,072
Headquarters: Westlake Village, CA
Sector(s): Business Services
Why it's hot: The online ad network's sites had 132 million unique visitors last year in the United States alone. Its acquisition of Shopping.net and Fastclick bulked up revenue.
See more B2 100 data for ValueClick
|  Despite talk of bubbles, the tech sector continues to surge. The 100 companies on our list are posting impressive results. (more)  Want to work at a B2 100 company? Omnivision Technologies boosted its staff by 89% last year. Find out who else is hiring. (more) |
