Offline marketers have had a few decades worth of trial and error to
learn that the messages in TV ads need to match the ones in print, on billboards and even in-store. With paid search, that translates to using the same keywords in an ad's title, in the body copy, on
the landing page and even to the shopping cart and support pages.
But take it easy when it comes to the actual ad itself. "Don't try to close the sale with your PPC ads. That's not their purpose," Thackston says. "The sole purpose of PPC ads is to drive visitors to your site, where they can collect enough information to take action--whether that means buying, subscribing, joining or whatnot."