I agree with most people. I think the blush is so sweet.
However, it's one of the things i'm not super picky about on my ponies. If she is in great condition with some blush rubs I still classify her as pretty minty. Although I agree with Taffeta about it looking sad on white ponies...
Rubbed blush looks a bit sad, especially on white ponies, but I never really thought about it as odd.