Got to Ad:Tech this morning. The usual suspects are around, but it's always interesting to keep tabs on how the market is evolving. One interesting surprise though: efficient frontier, an interesting SEM company. It's a company whose founder combined his experience with stock market systems (hence the name derived from modern financial theory) with his knowledge of how search engines work to create a platform helping advertisers optimize their marketing investments online. To them an AdWord is like a stock and the words an advertiser buys are very much like stocks in a portfolio. Thus provided one captures sufficient relevant information from search engines and can put them through an algorithmic process, it is conceivably possible to define the risk / return combination of each word and each possible combination of words, which in turn means that it is possible to define an optimal combination of words to be bought. Extremely interesting in my very humble opinion.