By looking at the list below you certainly take advantage of free software, I hope you give back.
Simon.
Funny enough one of the purposes of my wiki is to serve as a bridge between techie-forums like this and tech-phobic social science academics who don't understand these things, encouraging more people to use open source software, as well as providing some basic How-Tos that are easier to understand than the official documentation. You may not consider that "giving back" since I'm not writing actual code. But that is my idea of giving back. I'm currently writing an article for Anthropology News which encourages people to use MediaWiki. I've negotiated with the publishers to allow me to publish a version of the article as a wiki on my own site (although they won't let me use the Creative Commons license on my site). Now, the domain I use is shared with other people, and we use different servers for e-mail and hosting. That means I have another domain for hosting, and I use EasyDNS to forward my domain to my host. I'd prefer to keep all the links within my homepage, blog, and wiki under the same domain name if possible, and the ability to specify the root URL in MediaWiki forms would allow me to do so. If nobody knows how to do that, that's fine, I'll have to settle for the second-best solution. But please don't tell me I shouldn't try to do this. Other OS software projects I've used have been very encouraging of getting everyone to learn and understand the code and how it works, in the view that while this might seem like "giving away support for free" in the short-run, in the long run it will create a stronger community and stronger code.
kerim