I am so impressed at how simple it is to setup and how well it works with WordPress 3.5.1. I have even tested this great plugin with WordPress 3.6 alpha.
I highly recommend this plugin to anyone. Also it is best used with another cache plugin. I am currently using this great plugin with Hyper Cache and with great results.
Time to update my details, I have now tested this plugin with WordPress 4.0.1 and 4.1 Beta 2 works really well :)