One web-based service he found even allows customers to specify a target group, such as British lawyers or American doctors.

ECONOMIST: Computer security

On defense, the administration's list suggests it will target expensive weapons systems but does not specify which programs will be cut or how much money will be saved.

CNN: Navigation system, aid to farmers among budget cuts

Advertisers can specify which users can see their ads, defining the target market that best suits their budget.

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