Continuing from my previous post, clearly the web of software services to inter-operate with each other need an extension of the OSI Model to services level. There are many service which are working in this direction viz. RSS: Really Simple Syndication RSS is a format used to publish updates of your website content. Typically RSS is used by news websites or blogs - where content is dynamic and requires users to keep checking the site for updates. RSS updates could be just pointers to changes (or summary of changes) or it could contain the full feed ( i.e. all the new content). An RSS is typically read using a feed reader - a program similar to an email client which keeps checking for updates. While the primary function of an RSS feed is to provide information updates - it also helps in separating the 'presentation' from the underlying 'content' - just as the OSI Model separates presentation from data. With RSS in place, you need not read a blog or news only in the fo