I'm currently moving everything from a dual Xeon server to a Raspberry pi. So far the Pi has performed much better than I expected.
There will soon be a lot of things running here. I'm going to see how much of a load the Pi can handle.
Here is a list of things that will soon be running here:
-Web server(done. along with php and mysql)
-maybe some other things...
If you are bored you can click the server stats button at the top of the page ^^
I bought a second Pi as well for me to play around with. :)