The search engine ratings are in from the various services, and although absolute shares change wildly depending on the service, the trend is similar for all: Google is gaining ground while Yahoo and MSN are leaking air like a birthday balloon. This also doesn’t include traffic the engines get from their content networks, which is an important percentage of expenditure; I haven’t seen ratings for that, but my sense is that Google’s traffic of *quality* sites (as opposed to mis-typed domains that go to Agoga.com) is much higher than Yahoo’s.
Marketing Nerdistry 