I just search. Between text and tags, I always seem to be able to find whatever I'm looking for.

Pros: It's easy to set up, and has been robust. I like it that it stores its data in the filesystem, in a location of my choosing.

Cons: It seems to use a somewhat unconventional formatting syntax. I find a lot of the terminology pretty opaque. Having had a few scary configuration-related incidents, I don't try to push it to do exactly what I want anymore.

I'm glad to have found Tiddlywiki and set it up, because at the time, I was storing notes in a thousands-of-lines-long text file, which just wasn't working. But I should probably resurvey the scene and see if there's anything better.