The impossible dream is now here. Look to the right and you will see a list of labels. Here's hoping this helps to make the site more navigable.
FYI - just to clarify a couple tags -"research" covers all potentially useful research tools, "university" covers college life as well as opencoursewares and other offerings from major universities, "ipod" covers things that can go on your ipod, and "portals" are sites with lots of good links organized by subject. Most of the other tags are pretty self-explanatory.
We've gone back and tagged the old posts...if you see something mislabeled or think we should add/divide labels, let us know.