Sandbox: Data sets are tested in this space without causing an actual execution of the final code. Many popular search engines use this development space.

Scooter: Scooter is the spider or crawler of Altavista. Every year Altavista conduct the motorcycle race as scooter. 

Search Engine: Search engines are the computer programs which allow the visitors to find or share the information and data base on the web.

Search MSN: MSN stands for Microsoft Search engines. MSN depends on Altavista and Looksmart for its search results.

Search Term: Search term is generally known as query. For gathering information from the web visitors usually enters the information related keyword in the search box of search engines. The entered key word is called as search term.

Search Terms: Search terms which are generally known as keywords, queries. Visitors use search terms for access or getting data or information from the search engines. Search terms usually typed in the search bar of the search engines and directories.

SERP: SERP means search engine result pages. Search engines provides the most relevant information on computer screen to visitors what they are searching for (query or keyword entered in to the search box of search engines).

Server: Server is a system which responds to the client requests. In World Wide Web it is a computer which provides web page.

Session ID: In order to track the transactions of between the user and server an ID is created by which we can serve custom content, defeat browser caching, and to direct the flow of visitors through the website.

Sessions: In the form of cookies a web site visitors IP address is tracked. We can maintain data of the visitor such as no. of visits to the site, etc.

Shopping Cart: Shopping Cart is the computer programs or software which is used to track the customer purchases. Shopping Cart software is more useful for e commerce websites. 

Sidewinder: Sidewinder is the spider or crawler of Infoseek search engine.

Sky Scrapper: Skyscraper is a 160x600 pixels ad, used in Web Pages.

Slurp: Slurp is the spider or crawler of Inktomi search engine.

Snap: Snap means a medium sized web directory.

Spamdexing: Using black hat seo techniques or unethical techniques for rank high in the search engines. These types of techniques generally called as spamdexing.

Spamming: Spamming means using unethical techniques for getting rank high in the search engines. Examples are sending large numbers of e-mails, e-mail ads and etc.

Spider: spiders or crawlers are search engine programs which gathers the data or information from the new websites or new data from indexed websites and stores the data or information in their database. 

Spidering: Spidering means collecting or downloading websites data or information for including those data in to their database (search engines). For providing such data or information to visitors. 

Splash Page: Splash page is generally called as the welcome page. This welcome page consist only logo and this logo having link this link directs the visitors to go home page of the site.

Spoofing: Spoofing is also one of the black hat techniques which are used by spammers. Spoofing examples are IP address spoofing, forges an e-mail header to make it appear.

SSI: Some action that has to be executed by web server when a user visited a site are placed in an HTML file as a commented section which are known as Server Side Includes.

Static IP Address: IP address is an address that doesn’t change when ever a user tries to connect to the internet.

Stealth: Stealth Meta Tags are used in search engine optimization process. Stealth Meta Tags provides the information to the search engine crawlers or spiders but not to the visitors.

Stemming: Stemming means root word origins. Some search engines relay on stemming process to provide the search results for the visitors.

Stop Words: Website owners or webmasters intentionally stops the spiders for indexing the pages this type of situation is occurs in adult words. Stopping spiders for especially for some reasons (adult words). This may called as stop words.

Subdomain: subdomains are built upon an existing domain name. Examples of subdomains are dir.yahoo.com is the sub domain of yahoo.com and mail.yahoo.com is the Subdomain of yahoo.com.

Submission: The process of submitting websites or web pages to the search engines and directories for rank high in search engines.

Submission Service: this is the process of submitting websites or web pages to many search engines and directories at a time. This is also called as link form and submission services are banned by many search engines.