Following up on last month's post on search engine share with April numbers:
During April 2007, over the aggregated combined PPC spend of our agency's clients, Google seized yet more share from Yahoo, with Microsoft holding steady in distant third. This represents the second month in a row where Google gained and Yahoo lost.
As mentioned in prior posts on this subject, nearly all of our clients instruct us to run their paid search campaigns to achieve their economic goals. Our clients don't establish a priori budget levels by engine. Our portfolio bidding platform optimizes ad budgets, buying the most effective clicks first. Thus, an increase in spend on an engine reflects an increase in click quality, such as improved conversion and sales per click, relative to the other engines.
Here are the same aggregated ad spend results aggregated year-to-date through April 2007 for the Big Three, tabularly:
This chart represents our agency's clients' experience in aggregate. Your mileage may vary.