I with Beverly on this. When others share and are not riding with me it really gets to me too. If I am riding with someone I ride with regularly it's okay to share as I know their habits and they know mine and I relatively comfortable, but these clowns I don't know, not so much. I actually yelled at one guy on PCH a while back. He disappeared after that. I like to have the freedom to move about the lane as I feel is necessary and I find that the more I move around the lane while riding, the more others see I am there. At least this is what I assume.

 

I had a Volva try squeezing me as I was lane "sharing" in heavy traffic. I kicked his fender as I squeezed by him. After that he stayed far away from me.