What is Search Advertising?
Search Advertising, Search Marketing, Paid Search, Pay Per Click (PPC), Search engine Marketing(SEM)(and there are probably a few versions of the idea that we don't even know), is a system set up by search engines to allow you to pay for preferential placement of highly organized Search terms. This placement is different from one search engine to the next, but for simplicity’s sake let’s sticks with Google and Bing/Yahoo. On these search engines you get to be placed not only at the top, but also in a side bar, and your placement within these is further determined by relevance and how much you are willing to pay for your desired keyword.