We can give some information in HTML form. Then different peoples provides different HTML pages which are interconnected and in this way we get WWW. Information can also be given in the with the usage of RDF form (let say XML implementation of RDF). Different peoples can provide different RDF documents and... I expect that we can get a kind of RDF-based Internet. But the problem is that I do not see how RDF can link to each other. Is it possible? Do we have a net of RDF files (RDF files which point to each other and which can be browsed like WWW)?
Not yet - many datasets are islands, but there is a community trying to make it happen. Sites such as linkeddata.org would be a good place to look for more info. That most of the linked site fit on a single page diagram gives you a clue as to how big the RDF net is at the moment compared with the www.