Obfuscation: Obfuscation by definition means “to make obscure or unclear. When someone steals a high ranking page to keep in their web site this is similar to cloaking or stealth pages, it further protects the code by giving code stealers a micky page. But they will never get the rankings the real page gets.

Off Page Criteria: Factors determining search engines ranking for your page which is not actually expects link from your websites such as link popularity.

Open Directory Project: Largest human edited directory on the internet. It is also called DMOZ which is very large directory in the internet

Open Source: It is software through which people can access to see the source code of a particular page under the same open source agreement

Open Text: To search a specific keywords in a program and returns a list of keywords from World Wide Web for that documents

Opt-In: A Program that offer a user to participate is known as opt-in

Opt-Out: Any program that can be stopped or cancelled by a user to take some action is known as opt-out

Optimization: A set of techniques to process of modifying and marketing a website for higher rankings in search engine results to index and presenting with a different look to a visitors

Out Bound Links: The Links of our web sites pointing in to other web sites known as out bound links.

Overture: The Largest and most popular Pay per Click Search Engines.