Not sure if this has been suggested yet, but as someone running a VB4 forum on a VPS, I'm currently looking at improving the speed of my forum by moving JS, CSS and static images into Amazon S3 (if you happen to have any experience with this, I'd love to hear what to look out for!). I'm hoping that XF can be released with a moron-proof and easy way to accomplish this as well. I.e. move heavy-used static stuff into the cloud, and make it easy to accomplish this from within the AdminCP. That will be all. Thank thee!