For the past month I have been working on migrating my server over onto a new Debian setup, utilizing virtual machines and other measures to try and increase security and efficiency.
As a result of this upgrade, I will be writing articles on subjects such as
KVM - a virtual machine hypervisor
SELinux - Security Enhanced Linux
Xen - a different virtual machine hypervisor (which gave me limited success)
as well as a number of other topics.