RSS has many meanings, from “RDF Site Summary” to “Rich Site Summary” to “Really Simple Syndication”. I like the last term the most because I think it best describes RSS as a service. RSS can only be called XML aggregation because it is based on the XML language.
RSS 文件是标准的基于 XML 的文件，为联合和聚集 Web 内容提供了一种方法。
在当今世界中，您常常必须在数以百计的电子邮件和数十个 Web 站点中挑选以找到您想要的信息。 The RSS reader simplifies this task by putting these different data sources into one view.
Informa (http://informa.sourceforge.net/) 开源项目
The goal of the Informa Project is to provide a news aggregation library based on the Java Platform. The idea was born by the authors of two Java news reader applications (HotSheet and Risotto). We intended to unify the common parts into a library which can be used by any developer who needs to address those issues in their application.< /p> Informa is licensed under the GNU Library or “Lesser” Public License (LGPL).