I like what you have so far!
Here are some more catagories you can add to your clear and concise list:
+newsgroup client (i.e., NewsLeecher) - internet/network
+download manager (i.e., FDM) - internet/network
+login manager | +password manager - internet/network and/or PIM
-web based (i.e., roboform)
-general based (i.e., KeePass)
+window sizers (i.e., LeanwareWindowSizerE, Sizer) - goes under desktop I guess
+icon position saver - desktop
I think there should also be a main cat called Shell Hacks/Snacks/Tools & Utils or some thing where shell tools are gathered and reviewed. What do you guys think about this? You know what I mean right, right click context menu programs. Programs that specifically deal with the windows shell, right clicks. Here's 1 example of a great soft that has a nice collection of shell features, shelltoys xp - http://shelltoysxp.com/
, plus you can have common regedit tutorials for ideal personalization; i.e., tutorials for adding your own items to right clicks, etc.
Another idea would to make a main cat called "command line tools & nix emmulation tools" or some thing along those lines..
nix emmulation tools (i.e., unxutils - http://unxutils.sourceforge.net/
, cygwin - http://cygwin.com
, GnuWin32 - http://gnuwin32.sourceforge.net/
command line tools (CLI; cmd.exe|command.) (apps, etc.)
I thinks it hard trying to sort every thing in a folder like structure seeing there is so many apps that interweave with each other programs' purposes, etc.