Funny, I am the opposite. Unless the spot where you are going to turn is going to slow down traffic, such as a right turn with somebody behind you and you have to slow down for it, I hate when people signal. What does the signal mean on the freeway? Does it mean let me over? I am coming over? Am I suppose to back off if they turn it on when I am coming up on them in the lane they want to be in? Just make your move, I don't need you to advertise it to me. I don't even understand how using a blinker in a situation where everybody is going the same direction and similar speeds helps anything. Either you look and change lanes with nobody there or you cut somebody off, blinker doesn't change a thing.
As far as cutting me off, if there is a gap, take it, I don't care, just don't take it and go slower than I was driving.
Other drivers more than grind my gears, they blow my trans. Just push the pedal on the right down and go. Stop being so scared, stop hitting your brakes all the time, learn how to merge at speed, when you need to change lanes on the freeway and somebody is there, hit the gas not the brake, and your car can take off and on ramps faster. GO!!!