Here in Boston the last few days its been beautiful out, and as a result the bikers out in droves (which is a good thing) but I've almost been hit twice by bikers. One person passed me really close on my right between me and a curb without a warning and then was kicking her foot on the curb to keep moving since it was so tight, and another guy did what cars usually do and turned right in front of me without any vocal warning - he made a right hand turn signal with his arm, but only after he was already turning right in front of me. This winter it was just cars and pedestrians to watch out for. Silent bikes seem to be adding a whole new element, and make me feel like an old man for getting mad when fellow bikers behave dumbly. I guess my only point is there are even more hazards out there then I thought just a couple of days ago.