Min is only 995 bytes, so it will never slow down your website unlike bulky frameworks like Bootstrap. Min also does not require Javascript. Pages built with Min can load faster than a blink of an eye. (Average loading times for three Min pages tested were 334ms; a human eye blink is 400ms.)
Min supports IE5.5+, FF3+, Opera 9+, and Safari 4+, the best browser support of any CSS framework by far.