A search engine that offers a paid URL inclusion uses an extra spider that is programmed to index the particular pages that have been paid for. The difference between the spider that indexes pages for free and the spider that indexes only pages for a fee is speed. If you have paid for inclusion, the additional search engine spider will index your page immediately.

The debate over paid URL inclusion centers around the annual fee. Since the regular spider of these search engines would eventually get around to indexing your web page anyway, why is a renewal fee necessary? The fee is necessary to keep your pages in the search engine’s index. If you go the route of paid inclusion, you should be aware that at the end of the pay period, on some search engines, your page will be removed from their index for a certain amount of time.