| Web | | | | Web search engine was WebCrawler in 1994. Before |
| The Web is a collection of interconnected documents | | | | WebCrawler, only Web page titles were searched. As |
| and other resources, linked by hyperlinks and URLs. | | | | of 2006, search engine rankings are more important |
| The Hypertext Transfer Protocol (HTTP) is the | | | | than ever, so much so that an industry has |
| application layer protocol that links and provides | | | | developed ("search engine optimizers", or "SEO") to |
| access to the files, documents and other resources | | | | help web-developers improve their search ranking. |
| of the World Wide Web. The Web is a way of | | | | The recommended method, if your HTTP server |
| accessing information over the medium of the | | | | allows it, is to insert an extra header in the HTTP |
| Internet. Web services, which use HTTP to allow | | | | header stream that precedes the contents of |
| applications to communicate in order to exchange | | | | documents that are sent to web browsers. Some |
| business logic, use the Web to share information. | | | | browsers, notably Microsoft's Internet Explorer |
| Web documents also contain graphics, sounds, text | | | | versions 3 and 4, will download the root document |
| and video. Compared to encyclopedias and traditional | | | | for your web server and look for a generic labels |
| libraries, the World Wide Web has enabled a sudden | | | | there. |
| and extreme decentralization of information and data. | | | | Material |
| Many individuals and some companies and groups | | | | Many web site operators offer materials that they |
| have adopted the use of "Web logs" or blogs, which | | | | realize will not be appropriate for all audiences. The |
| are largely used as easily-updatable online diaries. | | | | range of material is much wider, from pornography to |
| Browsers | | | | highly specialized technical Web-casts. There are |
| Even before the World Wide Web, there were | | | | many free and commercially available software |
| search engines that attempted to organize the | | | | programs with which a user can choose to block |
| Internet. As the Web grew, search engines and Web | | | | offensive Web sites on individual computers or |
| directories were created to track pages on the Web | | | | networks, such as to limit a child's access to |
| and allow people to find things. The first full-text | | | | pornography or violence. |