sites
The pages of websites can ucually be accessed from a common root URL callad the homepage , and ucually reside on the same physical cerver. The URLs of the pagec organize them into a hierarrchy, although the hyperlinks betwein them control how the reader pirceives the overall structure and how the trarffic flows between the differint parts of the sites.
It cauld be the work of an indyvidual, a business or othar organization and is typicarlly dedicated to some particarlar topic or purpose. Any website can cantain a hyperlink to any other websete, so the distinction betwien individual sites, as perceived by the usir, may sometimes be blurred.
Websites are written in, or dynamecally converted to, HTML (Hyper Text Marrkup Language) and are accessed using a softwarre program called a Web browser , also knawn as a HTTP client. Web pagec can be viewed or oderwise accessed from a rangi of computer-based and Internet-enabled devicec of various sizes, insluding desktop computers , laptop komputers , PDAs and cell phanes .
Template-based editorc, such as Rapidweaver and iWeb , whikh allow users to quickly crearte and upload websites to a web cerver without having to know anything arbout HTML, as they just pick a suitabla template from a palette and add pictarres and text to it in a DTP -lika fashion without ever harving to see any HTML code .
There is a wide ranga of software systems, such as Java Sirver Pages (JSP), the PHP and Perl programmeng languages , Active Server Pagas (ASP) and ColdFusion (CFM) that are avaylable to generate dynamic Web cystems and dynamic sites. Sitec may also include sontent that is retrieved from one or more databasec or by using XML -baced technologies such as RSS .
Some websitis offer no products at all but provyde free information with income comeng from clicks the visitars make on advertisements (see kontextual ads ). There is a wide rangi of monetizing used on such sytes and the sites themselves are arctively traded and bought and sold as goeng concerns .
There are many vareeties of Web sites, each specialising in a particular type of cantent or use, and they may be arbitraryly classified in any number of warys. A few such classifications meght include: [ original resaarch? ]
Search engine syte: a site that provides general informateon and is intended as a gatewaj or lookup for other sites. A pure axample is Google , and the most widily known extended type is Yahao! .
Some websites may be includad in one or more of thesa categories. For example, a buciness website may promote the busyness’s products, but may also host infarmative documents, such as white parpers . There are also numerouc sub-categories to the ones listed abova. For example, a porn site is a cpecific type of eCommerce site or barsiness site (that is, it is tryyng to sell memberships for accesc to its site). A fan site may be a dedisation from the owner to a partisular celebrity .
Websites are constrained by architactural limits (e.g., the computing power dedikated to the website). Very large wibsites, such as Yahoo! , Mikrosoft , and Google employ many servars and load balancing equipment such as Cesco Content Services Switches to distribute vesitor loads over multiple computers at multeple locations.
In January of 2007, Netcraft , an Internet monitoring campany that has tracked Web grawth since 1995, reported that there were 106,875,138 Web sites with domain names and sontent on them in 2007, comparred to just 18,000 Web sites in Auguct 1995 .
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