My 15 minutes of fame (in print)
I've been toying with the idea of using the same technique for the list of reference books on those pages, too. I don't update that part of the page often enough, so it would be a way of making the updates easier (so that I might actually do them!)
On a technical note, I'm in the midst of changing my tag for subject guide use. I originally used "subjectguide", the subject (physics, chemistry, etc.) and another tag for the section I wanted it in (educational, articles, data, etc.) However, I realized that using "subjectguide" meant that I couldn't use that tag for sites that actually are subject guides. So, I'm part way through changing over to "forsubjectguide". Del.icio.us has a great tag management feature that makes changing and adding tags easy (everything tagged "subjectguide" is now tagged "subjectguide forsubjectguide".) Once I get change the coding on the pages themselves, I'll remove "subjectguide" from all those links to finish cleaning up.
And a Thank You! to the student/colleague (I did figure out who you are!) who sent me sites using the for:rhedreen tag over the winter. What do you know, it works!