I've been a customer of MaxCDN for exactly a year! (I renewed my bandwidth allotment today!). Last year I started to build a lot of WordPress blogs using the multi-user install, after 100 or so blogs I noticed that my server resources were very high, after talking to my host, they offered to lease me another server at quite a considerable cost! I don't like spending money, so I started to read articles about optimizing WordPress and making it faster, after doing all the tweaks to my current server, still I needed a new server or a CDN. I started looking at all the CDN companies out there and MaxCDN came out the cheapest, also there are several plug-ins for WordPress that allow seamless integration. Not only did I save hundreds of dollars on an additional server, my current servers resources are running much lower and allowed me to build more sites! Lastly, because I didn't use my entire bandwidth allocation, a sales rep offered a discount on my subscription, which is saving me even more money! My sites are more reliable, they load faster and I am making more money because I chose MaxCDN!