I'm curious about the Amazon solution, so I'll be reading up on that in the future. (I have too many projects going on right now to think about it.) For our purposes, SimpleCDN's service works well enough, and it's low-maintenance enough that I don't have to worry about setting anything up to sync our images between the forum and CDN. (We're all volunteer, so the less time I have to spend on it, the better.

) Even so, it's a bargain. My "free" $15 lasted quite awhile, at least 6 weeks or so.