Scraper Sites 
Designed to 'scrape' search-engine results pages or other sources of content (often without permission) to create content for a website. Scraper sites are generally full of advertising or redirect the user to other sites.

SE
Abbreviation or acronym for Search Engine

Search Engine
A computer program designed to search and retrieve documents or files or data from the World Wide Web. Search engines periodically crawl all the pages of a website and add the content into a large database that users can then search. In contrast, Directories don’t siphon content from the HTML code of a site. Instead they list site names and descriptions written or edited by human reviewers.

SEM (Search Engine Marketing)
SEM includes search engine optimization, paid listings and other search-engine related services applied in order to increase exposure and traffic to a web site. Online marketing includes market research, site submission, article writing, pay per click advertising and email marketing.

SEO (Search Engine Optimization)
A strategy to increase the ranking of web pages in search engines. Search engine optimisation includes technical optimisation, content optimisation and link building.

Search Engine Results Page (SERP) 
The search result delivered by a search engine after a query is made.

Search Engine Spam
Creating pages designed to trick the search engines into believing they are relevant for a particular keyword query.

Search Term
A keyword or phrase used to conduct a search engine query. 

Search Query
The keyword or phrases typed into a search engine to find relevant websites to match the query.

SEO Copywriting
Writing and formatting website content in a way that will help make the site appear relevant to a wide array of search queries.

SERP(s)
An acronym for Search Engine Results Page(s)

Server Logs
Files hosted on servers which display website traffic trends and sources.
Server logs typically do not show as much data and are not as user friendly as analytics software.

Server Side Includes (SSI)
SSI is a simple server-side scripting language which makes it easier to update websites. Server Side Includes allow the use of shared common code such as headers, footers, and left navigation created in one file and shared through the use of "includes" throughout the site.

Siphoning
Technique used to steal another website’s traffic, including the use of spyware or cyber squatting.

Site Audit
Reviewing a website to see how it can be improved to increase traffic, relevance, standard practice and search engine guidelines.

Site Map
The hierarchy of pages within a site usually listed in a table with all entries hyperlinked to its page. It not only helps users find information but can give search engines a secondary route to navigate through a site.

Skyscraper
An animated ad that moves across the browser, usually with sound effects. It animates only long enough to play a message before settling into a stationary ad on the page.

Sniffer script 
A small program or script that detects which web browser an Internet user is using and then serves up the particular browser-specific cascading style sheet to match. Sniffer scripts are also used to detect whether a user has the Macromedia Flash plug-in installed.

Social Bookmark
A form of Social Media where user’s bookmarks are aggregated for public access.

Social Media
Social media are primarily Internet-based tools for sharing and discussing information among users. Blogs, wikis, forums, social bookmarking, user reviews and rating sites are part of Social Media.

SMM (Social Media Marketing)
Website or brand promotion through social media.

Spamglish
Often appears as meaningless sentences and keyword repetition and is used as search engine fodder instead of thoughtfully written, interesting content.

Spamming
Spamming is most commonly associated with the act of sending unsolicited commercial email, but in the context of search engine optimization, spamming refers to using disreputable tactics to achieve high search engine rankings.

Spamdexing
Modifying web pages to increase the chance of them being placed close to the beginning of search engine results, or to influence the category to which the page is assigned.

Spider
Also known as a bot, robot, or crawler. A spider is a robot sent out by search engines to catalogue websites on the internet. Crawlers can also be used for automating maintenance tasks on a web site, such as checking links or validating HTML code. Also, crawlers can be used to gather specific types of information from web pages, such as harvesting e-mail addresses (usually for spam). When a spider indexes a particular website, this is known as 'being spidered'.

Spider Trap
An infinite loop that a spider may get caught in when it explores a dynamic site where the URLs of pages keep changing. Sometimes intentionally used to prevent automated scraping or e-mail address harvesting.

Splash Page
Splash pages are graphics pages without significant textual content often created in Flash. They look flashy and impressive to some people but without attention to SEO, look like useless pages to search engine spiders which can only navigate through text links.

Standards Compliant
Sites that use valid HTML and XHTML, and CSS, separate the content layer from the presentation layer. Because standards compliant sites are accessible and usable to both humans and spiders alike, they tend to rank better in search engines than non-compliant sites.

Static Page(s)
A web page without dynamic content. Static pages work best with good SEO and are more search engine friendly.

Static Content
Site content which does not change frequently. A static website has not had any new content added in a long time.

Stemming
Search engines such as Google use a process called stemming to deliver results based on a word's root spelling. An example would be similar search results returned for “clothes” as for the word “clothing”. 

Stickiness
Website changes that entice users to stay on the site longer, and view more pages improve the sites “stickiness”.

Stop Character(s)
Certain characters, such as ampersand (&), equals sign (=), and question mark (?), when in a web page's URL, tip off a search engine that the page in question is dynamic. Search engines are cautious of indexing dynamic pages for fear of spider traps, thus pages that contain stop characters in their URL run the risk of not getting indexed and becoming part of the "Invisible Web."

Stop Word(s)
Certain words, such as "the," "a", "an," "of," and "with," are so common and meaningless that a search engine won't bother including them in their index, or database, of web page content. So in effect, the stop words on web pages are ignored, including stop words in the title tag.

Streaming Media
Audio-visual content that is played as it is being downloaded. An Internet user could begin watching a video clip as the footage downloads rather than having to wait for the clip to download in its entirety.

Submitting
Submitting a web page URL to a search engine to be indexed. Submitting pages using an automated tool, submitting multiple pages of the same web or submitting multiple times does not guarantee indexing.

Supplemental Pages
These pages provide additional information about the particular search.

Syndication
An option that allows you to extend your reach by distributing ads to additional partner sites.