Home server?

I've been thinking more seriously about setting up a home server.  Yesterday I looked at the Freedombone, Yunohost and Freedombox projects - these are some of the noteworthy attempts to make a Linux distro specially geared towards home servers.  All three are based on Debian Linux and can be run on a variety of hardware.  Cheap Raspberry Pis, old computers and other cheap machines are what people normally use.  In my case I will be trying from an Eeeepc netbook, since I have one lying around and its electricity needs are a bit smaller than those of a normal laptop.  I do have an unused Raspberry Pi, but it's one of the early models and has only half a gigabyte RAM.