I have a new feature in the worldoutline that allows me to start a dozen comment threads in one post.
One topic, "It's okay to ride on a sidewalk" has spawned a lively discussion. I just added a comment.
There's another side to this. The pedestrian. Suppose you're an old dude with frail bones. You want to go out for a walk every afternoon, because you need to get out. But the sidewalk is filled with asshole cyclists that might hit you. If they hit you they could break your hip and you go to the hospital for months, and could very well catch pneumonia and die. Aren't you entitled to a relatively safe place to walk?
PS: Thanks to Disqus for providing an open commenting system that's so easy to experiment with, and to Daniel Ha for being so supportive.