I did not know anything about Backlight Bleeding until I have reached this forum. My rMBP is on it's way and after reading all the complains I'm just wondering how does Backlight Bleeding effect the usage? I tried the Backlight Bleed Test on my monitor and I did notice some bleeding. But I've been using it for over 4 years now and it has never effected me. If it wasn't for the test I would have never known about backlight bleeding. Is it something worth returning/exchanging for?