John Siracusa’s Journal: Paths in the grass: “If someone goes through the trouble of creating and then supporting a system extension that provides a certain feature, and a significant number of users are willing to spend money - and, in many cases, willingly compromise the stability of their systems - to get this feature, then that’s a pretty good sign that this feature is a ‘high-value target’ for Apple. The not-so-invisible hand of the market is showing Apple the way.”