Image search is offered by all of the major search engines, and people tend to think it's a fairly generic service, with little difference in results between any of the engines. That's now changed with the introduction of a new image search feature by Ask Jeeves, that makes it clearly different from any of the others. I've got an overview of the new service including a comparison of the major image search services in today's SearchDay article, Searching For a Better Image.
Optimising Digital Marketing Campaigns with Search, Social and Analytics
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