Google is about to announce technology that will allow its advertisers unprecedented levels of control over when, where, and who can view their advertising on Google search pages and those of Google partner web sites.

For the first time, the search giant will provide its advertisers with an application programming interface (API), which will enable them to link their computer systems with Google and control parts of the mammoth Google ad delivery system. The API will allow advertisers to self-administer the delivery, the timing and the price they will pay for their text ads.

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