Pay-Per-Click (PPC) Advertising

PPC ads are simple enough to look at. They're text-only. PPC ad campaigns are completely controlled by the advertiser. You decide which keywords should bring up your ads, you write the copy, and you decide how much you want to pay. And, as the name indicates, you only pay for an ad when someone clicks it and is brought to your site. There are two main networks of PPC ads, run by Google and Overture, and each has its own advantages and disadvantages, but in both cases, one should be prepared to spend a great deal of time (and money) monitoring and adjusting such a campaign.
ajmalseotips.blogspot.com