Techcrunch could be delivered as a PDF.  I get it on my Kindle.<p>Just as most new web sites are not startup companies, most existing web sites are not apps.<p>The distinction and difference is that a software application helps a user perform manipulation or transformation of data as useful work.<p>Most websites, despite simple interactivity (e.g. search), are still published as "content" for consumption within a content access application, not for manipulating work|play|creative output.