by: David Greene Search Engines. What is a Pay Per Click Search Engine? A pay per click search engine is designed for pay for performance advertising. That means that an advertiser pays the search engine owners only for traffic that is delivered to his web site in accordance with key words that the advertiser chooses to bid on. Example: An advertiser has a web site that advertises vacations to Thailand. The advertiser can bid on "vacations to Thailand" as a key word. If he wants to be in the number one position on the search results page he can place a bid that is one cent more than the existing high bid for the key word term "vacations to Thailand". Let's say that the present high bid is $0.20 per click. A bid of $0.21 would than gain the top position for the advertiser. If his key word was clicked on 10 times in one day he would pay 10 X $0. 21 , or $2.10 for the traffic that was delivered to his web site for that day. The advertiser is p...