Filesystem tagging for Linux

Stephen Hahn isn't the first to suggest adding tagging functionality to the filesystem so we can manage files the same way we do bookmarks with del.icio.us -- Apple is doing some interesting things with Spotlight and metadata, and Microsoft is working on the mythical WinFS, for example -- but he might be the first to actually implement it. He's created a Perl script for Linux called "tag" which lets you tag your files and retrieve them in a manner reminiscent of del.icio.us -- but from the command line, of course. Neat trick, Stephen.
So, just how good at time waster games are you? Think you've got the stuff? Well, The World's Hardest Game 2.0 doesn't think you do.
Yes, amazingly, it's possible to have a sequel to a game called "The World's Hardest Game". It doesn't seem logically possible, since if the first one was actually the world's hardest, how could another one come along and share the moniker? It made me doubt the name in the first place. That is, until I tried the game.
The mechanics of the game are very simple. You are a small red square, ...
