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As is clear from the title, with these engines you have no way other than to pay a recurring or one-time fee to keep your site either listed, re-spidered, or top-ranked for keywords of your choice. There are very few search engines that solely focus on paid listings. However, most major search engines offer a paid listing option as a part of their indexing and ranking system.

Unlike paid inclusion where you just pay to be included in search results, in an advertising program listings are guaranteed to appear in response to particular search terms, and the higher your bid, the higher your position will be for these terms. Paid placement listings can be purchased from a portal or a search network. Search networks are often set up in an auction environment where keywords and phrases are associated with a cost-per-click (CPC) fee. Such a scheme is referred to as Pay-Per-Click (PPC).

Yahoo and Google are the largest paid listing providers, and Windows Live Search (formerly MSN) also sells paid placement listings.

So here’s what you should remember from this lesson:

1.    Search engines (SEs) are classified into crawlers, directories, META engines and paid-inclusion engines.
2.    Crawler-based SEs use software called robots, spiders, or crawlers to add new pages to its database which is called an index. Directories use humans to manually fill their databases.
3.    After your site has been included in an index of a crawler-based search engine, you will appear in its results, and your position for a certain search query depends on how relevant the spider finds your page for this query.
4.    Your directory listings are quite influential to your positions in crawling search engines.

Подобни статии:

1. Submitting to Search Engines ...
2. Search Engines’ Submission Rules and Guidelines ...
3. Pay-for-Performance търсачки ...
4. Pay-for-performance и платени търсачки ...
5. Оптимизация на сайт на мобилно приложение ...