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URL shortening is a technique on the World Wide Web in which a Uniform Resource Locator (URL) may be made substantially shorter and still direct to the required page. This is achieved by using a redirect which links to the web page that has a long URL.
TinyURL is a URL shortening web service, which provides short aliases for redirection of long URLs. Kevin Gilbertson, a web developer, launched the service in January 2002 [1] as a way to post links in newsgroup postings which frequently had long, cumbersome addresses. TinyURL was the first notable URL shortening service and is one of the ...
The site also makes it easier for Facebook to differentiate between accounts that have been caught up in a botnet and those that legitimately access Facebook through Tor. [6] As of its 2014 release, the site was still in early stages, with much work remaining to polish the code for Tor access.
The Bitly URL shortening service became popular on Twitter after it became the default URL shortening service on the website on May 6, 2009. [5] It was subsequently replaced by Twitter's own t.co service. [6] The company behind Bitly launched a similar service, but for online videos, to determine what videos are the most popular on the web. [7]
Sometimes URL shortening is used to create them. A permalink is a type of persistent identifier and the word permalink is sometimes used as a synonym of persistent identifier. More often, though, permalink is applied to persistent identifiers which are generated by a content management system for pages served by that system.
This meant putting the name of a user, a brand, an event or a group [14] in a post in such a way that it linked to the wall of the Facebook page being tagged, and made the post appear in news feeds for that page, as well as those of selected friends. [15] This was first done using the "@" symbol followed by the person's name.
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A URL will often comprise a path, script name, and query string.The query string parameters dictate the content to show on the page, and frequently include information opaque or irrelevant to users—such as internal numeric identifiers for values in a database, illegibly encoded data, session IDs, implementation details, and so on.