http://u5n3wlq5nk7db3a7wjps3fmw3igl5dtvimy6xgqi7fgevji5jqyqhpqd.onion/darkweb-markets-in-year/index.html
Of course, the black market is huge, but on the scale of all information, the deepweb is only a tiny part. Many closed anonymous darknet communities discuss network security, politics, business, finance, programming, technology, and so on. In short, these are closed forums where people share their knowledge on a professional level, for various reasons, wanting to remain anonymous and inaccessible to others.