[screwlewse]

Yes, I do. I come from large corporations, where studies have shown that when a site is slower, even by 50-100 milliseconds, your traffic WILL decrease. When your site gets a million views a day, 2 percent is large. Thats when you start to nitpick each and every part of your site that slows things down. I use SASS/Compass because it's an awesome tool to maintain your CSS, however it's very easy to add alot of extra CSS (mixins and whatnot). The reason I created this, was to find out if using @extend would perform similarly to the OOCSS methods, which are proven to perform fast. I think it accomplishes exactly that.