What exactly is Medium? Articles from it come up in a lot of my IT-centric web searches, and the site limits users to a few articles per month before requiring a login to continue reading. I figured this was a sign of quality content, and editing staff, and the like. Often, though, the articles I find on Medium are either not helpful, incomplete, or so poorly written that I don't bother to finish reading them. Medium seems popular, but why? What do they offer?