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.