Interesting in that I've had the same experience in delaying signing up for services when my name was taken. It's silly I guess but I didn't sign up for twitter for about a year because of this. Maybe that's the only argument a company would care about enough to make a change - the idea that they won't have as many users if squatters take so many names. Of course, if your service is at the point where there are name squatters maybe you're doing well enough already and don't care.