Efficient Frontier
Efficient Frontier is a worldwide leader in performance marketing solutions for both advertisers and agencies.
Founded in 2002, Efficient Frontier pioneered the application of modern portfolio theory to SEM and today combines its core predictive modelling algorithms and bidding technology with comprehensive strategic and tactical value-added services to manage more than $1 billion in annual search spend globally.
The largest and most sophisticated advertisers and agencies partner with Efficient Frontier to achieve and sustain optimal campaign performance and growth in highly complex and competitive search marketplaces. The company is headquartered in Sunnyvale, California, with offices in New York, the United Kingdom, France, Germany, and India, and technology licensing partnerships in Japan, Hong Kong and Australia. Efficient Frontier is a privately held company with funding from Redpoint Ventures and Cambrian Ventures.
More information can be found at http://www.efrontier.com and Efficient Frontier blog http://blog.efrontier.com/
You can follow Efficient Frontier on Twitter @efrontier