@BillRM,
Critical Mass, and I would hate to ride on the streets of a town after a Critical Mass ride.
When I approach an intersection, I definately take the lane, unless there's a bike lane. If I'm
in the lane, they are going to see me. If I'm in the "gutter lane", they usually won't, and if they don't see me before making a right turn, it can definately get interesting. I'll agree with everyone that riding on the sidewalk is insanely dangerous, and the "car door lane" isn't any better.
Here (Farmington and Albuquerque) riding the sidewalks is legal, except in business districts, and along streets with marked bike lanes. We do have the option of becoming a pedestrian by the simple act of dismounting. If we chooose not to, we are treated exactly the same as any other vehicle on the road.
In the OP's question, I'm inclined to hold the cyclist at fault, though that is not the same as saying legally at fault.
You guys are seriously underestimating inline skates, though. They can get 18 or 20 miles an hour, and get up to speed quicker than you would ever believe - till the hit a pebble. Then they can face plant faster than you would ever believe.