- Hubspot - $15.6 million (179 employees = $87,150 per employee)
- Spongecell - $3.8 million (25 employees = $152,000 per employee)
- Millenial Media - $47.8 million (162 employees = $295,061 per employee)
- Yext - $23.4 million (85 employees = $275,294 per employee)
- myBuys had $9.4 million (87 employees = $108,045 per employee)
- Clearspring - $6.3 million (47 employees = $134,042 per employee)
- Collective - $100.2 million (182 employees = $550,549 per employee)
- TRAFFIQ - $9.1 million (42 employees = $216,666 per employee)
- Rockfish Interactive - $14.1 million (recently acquired by WPP Group) (120 employees = $117,500 per employee)
- OneScreen - $2.2 million (30 employees = $73,333 per employee)
- mediaFORGE, $2.1 million (17 employees = $123,529 per employee)
It's hard to make any overall assumptions here, but if you did, you'd note that the ad network model-related companies are out in front in terms of revenues and revenue per employee in 2010.
In terms of a benchmark among the publicly-traded competition, Aol recorded approximately $334 million in 2010 revenues for its Ad.com ("Third Party Network" as Aol calls it in its earnings releases) unit.
Private companies have staked out their revenue turf in press releases, too, as personalized retargeting firm Criteo said in July that it had made $200 million in three years (PDF).
By John Ebbert