Way back in the days when "delicious" was just "del.icio.us", I had assumed that everyone had finally caught on that Ontology is overrated.
So why am I still having to roll my own tagging system using sqlite and a bunch of ruby scripts in order to address this obvious deficiency on my own local machine? I can tag on-line web links, blog posts, questions on stackoverflow.com, and all kinds of web-centric miscellany, but this very basic concept still seems to be missing (or hideously crippled) in the few operating systems I get to use. Perhaps I am just using the wrong OSs?
From what I've seen out there, the pickins' seem pretty slim.
What do you use?