What is RSS source address? How to subscribe?

RSS source address is a format for describing and synchronizing website content, and it is the most widely used XML application at present. The application of RSS has been very common in foreign countries, and services based on RSS are provided from personal blog columns, corporate websites to world-class portals.

The original 0.90 version of RSS was designed by Netscape, aiming at establishing a portal website integrating the contents of major news websites. However, the 0.90 version of RSS specification is too complicated. With Netscape giving up the project, the simplified version of RSS 0.9 1 was suspended in 2000.

Soon, a company specializing in developing blog writing software, UserLand, took over the development of RSS version 0.91,and continued to develop it as one of the basic functions of its blog writing software, and gradually launched versions 0.92, 0.93 and 0.94. With the popularity of online blogs, RSS, as a basic function, is also supported by more and more websites and blog software.

While UserLand took over and continuously developed RSS, many professionals realized that it was necessary to develop RSS into a general specification and further standardize it through a third-party and non-commercial organization. So in 200 1, a joint team redefined RSS based on W3C's new generation semantic web technology RDF (Resource Description Framework) under the development principle of version 0.90 RSS, and released RSS 1.0, defining RSS as "RDF site summary". However, there is no effective communication with UserLand, and UserLand does not recognize the validity of RSS 1.0, and insists on further developing the subsequent version of RSS according to its own ideas. By September 2002, the latest version of RSS 2.0 was released, and UserLand defined RSS as "really simple aggregation".

After publishing an RSS file (commonly known as RSS Feed), the information contained in this RSS Feed can be directly called by other sites, and because these data are in standard XML format, they can also be used in other terminals and services, such as PDA, mobile phone, mailing list and so on. Moreover, a website alliance (such as a series of websites specializing in tourism) can automatically display the latest information of other websites in the website alliance by calling the other party's RSS Feed. This alliance is called RSS alliance. This kind of alliance will lead to the more timely the content of a website is updated, the more RSS Feed is called, and the higher the popularity of the website will be, thus forming a virtuous circle.