He got a modern operating system running on a 25 year old (!) computer. This is all good fun, of course, but there are some really important take aways:
1. Linux has exceptional support for old hardware. One of the reasons people have used it is that instead of throwing away old Windows computers, they can turn them into servers.
2. The operating system is very, very stable. You can have some confidence turning your old hardware into servers because very little in the OS is hardware dependent and so it just keeps running.
All in all, this is a pretty interesting article (although it's very linux geeky).