I have already been running my own website on my ESX testlab server on a virtual machine running Ubuntu 13.x.
As that test server (XW6400 workstation) is consuming quite some power, I was looking for a low power ARM based server but there were not a lot of alternatives that provided enough performance. Until the quad core Raspberry Pi was launched 🙂 Raspberry has it’s own version of Debian (raspbian) which is easily upgraded from Wheezy to Jessie (latest release). Install NGINX, PHP, MySQL, do some configuration and optimization and you’re new LEMP server is good to go.
Overall I’m quite impressed with such a small device and even more with my (reduced) power bill.