Many love them. BUT, be careful after a certain age they don't look good. They always go on about it being used as a blush but again, you can end up looking like the tin man. You have seen AY with the shiny shiny shiny cheeks, that is shimmerbrick. I always thought the Smashbox Softlights better not so much shimmer and much easier to wear.
As an old wrinkly and porey, I couldn't agree more, did not suit me at all, looked very unnatural, altho it seems to look good on a young skin.