I've seen quite a few, and while this makes me happy as a biker, I do wish people would ride more safely and PREDICTABLY. I nearly got run down on the sidewalk today by a biker coming off the street suddenly. Then, on the way home, a lady blew thru a four-way stop in front of my car and I could have easily hit her had I not reacted so quickly.
I was not pleased. And yes, I'm one of those bike-like-a-car folks. I'm going to stop ranting here. But the point stands. Ride predictably, and sensibly.