I've decided it's time to learn a few new tricks.
The first trick I'm trying to learn is PHP. I'm used to java and JSP pages (although these modern new-fangled frameworks do nothing for me), but there seem to lots of web-based applications out there using PHP, and if I'm going to install and maintain some of them, I ought to understand how the language works.
The second trick is Ruby on Rails. The promise of simplicity is very appealing to me. That agrees with my systems philosophy - KISS.
(More generally, the more completely you can understand a system, the better the chance you have of making it work properly.)
After a few trails and tribulations, I've now got both software stacks up and running. Off to try a few examples...