I've written before about the blurring of offline and online worlds and here is a great example of the concept in action; an interesting program that allows you to integrate your Flickr account into the file system of your Linux-powered computer, making it as easy to upload and download files as copying and pasting between folders. This is continuing the idea of merging a web experience with the desktop experience rather than the web being confined to your web browser. The program that makes this possible is called flickrfs and is available as a package for Ubuntu systems and is worth setting up as it is interesting and useful in itself, but also because offers an idea of what it would be like to use a filesystem based on tagging rather than one based on rigid structure or classification.