Notes, Blogs, Social media, LinkedIn, Xing, Facebook, Sharing, Liking, Information Sharing. There is a lot of information floating overall the globe, however it might make sense to ask the question : do we really need all of these pieces of information ? Do not we cause by chance just an unnecessary amount of information trash or information junk ? Similarly as the industrial revolution resulted a lot of physical trash, does the IT revolution result a lot informational trash ??