Mario's just said what I was about to say - to remind people that it'd worth it sometimes putting a bit more effort into crafting a post, so that it contains relevant links - to songs you mention to make a point, to people you mention, and so forth. And these can be either in the Mudcat or anywhere else. And of course to other threads or posts too, where appropriate.

As I see it, it doesn't really matter too much if the tags are 100% accurate, so long as they are moderately so. And thread drift doesn't really alter things, the tags can show where a thread starts off from, and after that it's up to people to stay with the drift, or drift away to another thread or something else in the real world.

I would have thought that it would be possible to have some way that people who like to keep thing neat and tidy to push a button to get all the tags sorted out automatically. All the threads without tags would be in a Miscellaneous list (but divided music and BS).

And the rest of us wouldn't push the buttons, and we'd browse the Mudcat the way we like doing it.