Just discovered the Noguchi filing system, in which everything is filed on the left of a shelf of file envelopes (could be folders, I think). Any file that gets used goes back on the left. Eventually, dead files migrate to the right, active to the left. Can't see how this is scalable, but maybe constrained scale is the point.

Lots of ideas for productivity out there, much of it connected to the David Allen book, Getting Things Done. The book has spawned sites like http://43folders.com and of course the author's own site: http://www.davidco.com

There's a wiki for the 43folder site here: http://wiki.43folders.com

Another one to follow up: http://www.slackermanager.com/slacker_manager/

Now I've signed up for the del.icio.us tags on lifehacker -- too much stuff and it's getting repetitious. Investigate motivation in context of procrastination.