Burlington, Vermont

Founded: 1997
Employees: 271
2009 revenue: $51.3 million
CEO: Mark Bonfigli

Provides online marketing services for auto dealers, auto manufacturers, and media companies. is a training machine. Employees use uFuel, the company's online learning system, for tasks as varied as mastering software basics and deepening the expertise needed to further their careers. also offers top performers 52 weeks of M.B.A.-level course work, designed specifically for the company and taught by business professors from a local college.