BTW, the bit about NetNewsWire supporting the source:markdown element in RSS may sound ho-hum, but it's actually huge. The new things in open formats tend to sound boring when you first hear about them, they take a few years to fill out, but this is enough to get the ball rolling. FeedLand is imho going to be an important product. NetNewsWire already is. Between the two products there's enough to start a bootstrap. Now I'm using their announcement to entice others to jump on board. They're listening more carefully than before. That's why I'm writing this second post, to be sure people don't miss it. Here are the developer notes for adding Markdown to your feeds and to your reader software.