This little plugin is fantastic, and fully deserving of 5 stars. My site has sped up a huge amount since installing it. The sprites function wasn't working for me a few days ago so I just left it off, but I checked the support forum today and the problem's been FIXED - so if you find something's not quite working check the support forum, because quite likely someone else has experienced the same issue and there is a fix available. I back this plugin 100%, I think it should go commercial because it's that good I'd pay for it (twice!) Great work developer!!