I've read a little about it on Apple's site and Wikipedia, but I am not really understanding what it is exactly. It looks like OS X from the screenshots I have seen, but there is obviously more to it. I guess my main question would be: could I actually install this software on a spare Mac and use it as a server? I would be extremely interested in doing this, but is much hosting knowledge required? I would rather go with this solution than pay a monthly fee for hosting. It's probably much more complicated than I think it is, but at least I asked. Thanks a lot!