Interesting topic and I would agree with most that if I had a window seat, which is my preference, if asked by a seatmate, I would comply with thier wishes.

Another, similar topic can be that of the air valves, I'm unsure of thier real name. I was on a flight from DFW to IAD yesterday that many pax found to be too cold for thier comfort. I felt the opposite and had by air blower on, as did the pax in the seat across from me. After the FA discovered that there were no more blankets, the pax in the seat in front of me reached over her seat and turned off all three air blowers and asked the woman next to her to do the same, although she did not comply.

I think in this case it's a little more clear, since there are usually 2-3 air blowers in a row, one for each passenger, but was it right for her to expect others to turn them off simply because she was cold and all the blankets were taken?