A friend of mine runs a paid online community. A couple of years ago, she raised the annual price from around $199 to $399. The first group of users renewed at a rate below 70%. Six months later, renewals increased to around 85%. The content itself did not suddenly become twice as good. What changed was the delivery. Before, members joined the community and had to browse through hundreds of posts to find something useful. Later, she started selecting the three to five most valuable pos...