AdBrite was started by Philip Kaplan and Gidon Wise in 2002. They were looking for an easy way to sell advertising on their websites and blogs, and decided to place a small "Your Ad Here" link on each site to connect advertisers to an order form. AdBrite's simplicity spread through word-of-mouth, and within the first two years, more than 1,000 sites were using AdBrite to sell ads.
The duo officially incorporated the company in 2004 and teamed up with Sequoia Capital, who’d previously funded companies including Google, Yahoo, and Apple. Since then, thousands more advertisers and publishers have entrusted AdBrite to manage their online advertising needs.
source : http://www.adbrite.com/