I got a early 15" MBP refurb a month back. I noticed today that I have a black stuck pixel but luckily it is on the very right edge, right next to the bezel. In fact there is no screen past it. I think I would of noticed it in the first few days if it was there. It is no concern because of it's placement. But I am curious of how common it is for these pixels to stick or die as time goes on with the screen?