There is a catch - Commerical CDN's like Akamai and Limelight are not cheap at all. Good news, we have an exception however - the free, P2P-based CoralCDN allows us to take full advantage of a powereful CDN without spending a dime. How to use it? Well, basically, just append
.nyud.net to the hostname of any URL, and that URL will be handled by Coral - simple.
If you are paying bandwidth fee, this plugin hopefully helps with your bills. Even if you don't, enabling it may save your site in peak times.