Pay-Per-Click, or PPC, is often used by businesses to advertise on search engines. Advertisers can create an account to display ads on search results pages for keyphrases they wish to bid on. They can set up their accounts so that they only pay when a user actually clicks on an advertisement that links to the advertiser's website or landing page. The cost of a click varies greatly, from 5 cents to over $100. Advertisers will only pay the publisher up to a maximum PPC rate that is controlled through the campaign management portal. This allows businesses to advertise their company no matter what their budget. Many search engines and portals offer this kind of paid search advertising but the most popular are Google, Yahoo!, and MSN.

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