I've had bicyclists who are on the sidewalk yell at me when I am on the road, telling me to get off the road and join them on the sidewalk. Must have been thinking they were looking out for my safety, but tells you how ingrained the sidewalk riding mentality is in so many people. I'm not totally against it mind you, in certain circumstances, but an all out and out ignorance of bicycling on the road rights and rules is disturbing.