I’ve run VPS systems based upon VServer, OpenVZ and Xen on my own equipment (see http://en.wikipedia.org/wiki/Virtual_private_server) primarily for security reasons. I’ve also run VMWare but that was more to maintain my sanity and control my Microsoft induced tourettes, rather than outright security.
Downspout.ca was being run in an OpenVZ/Virtuozzo based VPS system. On Wednesday Oct 8, 2008 it disappeared from the internet along with an unknown number of others, probably hundreds, of sites. The last I saw of it was 11:45pm. It was gone by 11:50pm.