One thing that has blown me away is the decline in information sharing on these networks. With web search engine results returning many commercialized links, p2p network used to be great for returning all kinds of document results. From medicine and garden tips, to anti-government and spirituality; these network used to be excellent sources of information. Even simple HTML files. With some of the content being "infringing", you never really heard anyone getting a letter from their ISP for sharing a romance novel.