Since January this year, I've been responsible for running a website for Od@ -nettverk, a network / community for women working in IT in Norway. By now we have more than 900 members. Our web site runs Joomla 1.5.
Coming from a strictly Microsoft background, the prospect of running the site was a bit daunting at first. PHP? MySQL? But it has turned out well. I'm more comfortable around it now.
I'm actually amazed at how many free modules and components there are. Here are a few of my favorites that we use in our site: