There are roughly 20,000 search engines on the Internet, serving both general interest topics, and quite focused tight niche markets.
A pay per click search engine, (also known as a pay per ranking, pay per placement or pay per position, search engine) allows paying advertisers to bid for rankings in these search engines and as the rankings get higher, the more money each advertiser pays per click.
Basically, a pay per click search engine allows advertisers to pay for a ranking in your search engine and the higher the ranking the more money they pay.
For example, the phrase "Internet Marketing" might have 100 bids on it, and the number one bid might be $5 per click.
So every time someone searches for Internet Marketing and clicks on their link, it costs them $5.
A pay per click search engine allows the advertiser to open an account and deposit some money as a starting balance.
With this, the advertiser enters their site's URL, title and description and bid on relevant keywords.
A site selling widgets would bid on keywords such as, "widgets," "small widgets," "blue widgets" etc.
When someone searches for "widgets" the details of your site appear, in the form of a search result with the URL, title and description entered. If they then click on your listing, your account is debited the amount you have bid on that keyword.
What makes it so good for the advertiser is that someone who has searched for your product is already qualified when they come to their web site, which is selling the product they are looking for.
