While trying to figure out what to do with my Asus EEE PC (http://www.linuxlinks.com/article/20071204141457291/Asus-701-Introduction.html), I read about someone who was using theirs as a web server.  It makes for a very quiet, low power server.  I decided to give it a try!
Even though it's only a netbook, it's now serving the web pages you're currently reading, and the Diddlycraft world server!  Not too shabby!
As usual after server changes, let me know if you find anything broken.