Script Summary: MAJOR BUG, FIXING, DON'T INSTALL THIS.

This script may very well be defunct. I've discovered some major problems. So don't install it, please. Sorry.

Version: 1.2

Features:

Create a custom page title for any page you want. Greasemonkey saves your preferences.
Obfuscate all page titles by removing non-alphanumerics.
Remove common (or uncommon) words from all titles.
Decimate titles, removing every Nth letter.
Simply display a random title for each page.
New! Whitelist/Blacklist for filters.

Notes:

If you're updating to a new version, you should save anything you may have changed in the filters, otherwise they will be written over.

The filters and whitelist/blacklist can be turned on and off via User Script Commands in the GM menu. You can also access the custom retitling, and whitelist/blacklist sites that way. If you want to tweak the settings of the filters, for instance change the words that are removed or alter the decimation rate (or even put your own random titles in place of the ones I thought up on a whim), you'll have to alter the code, but I've commented it pretty heavily so that should be easy enough.

I came up with this script after seeing Page Title Changer and the comments to it, and wondering if I could come up with a script that did what JoeSimmons was asking for. And then I got a little crazy. I have no idea why anyone would want to use this script, but if you do, here it is. I don't use it myself. But I have tested it, and I am more than happy to support it.

Future additions:

Maybe a filter to replace rather than just remove words. Maybe some way to specify domains, not single pages. Maybe a way to alter the filters less-code-intensively. I don't really know. If you ask for it, I'll try it. Why not? It's pretty silly.