Serious Action

REVIEW SUMMARY
Entrepreneur. John Lemp, co-founder of Sarasota-based IntegraClick.
Industry. Online advertising
Key. Firm is considered something of a pioneer in the world of cost-per-action online advertising.
By The Numbers. Click here.

The words people use most often to describe John Lemp are nerd and practical joker.

The evidence makes for an unlikely image: To some he's a geek who reads graphic novels and loves to figure out complicated Web algorithms in the middle of the night.