I have several tags (out of the ones I can see anyway) that are just gibberish. I don't even know what they used to be.

I save fic to my hard drive as .epubs. They take up a lot less space than .pdfs. And yeah, I've been burned enough by disappearing fic that if I really love a fic, I save it immediately just in case.

Anyway all my old Delicious bookmarks are saved in Firefox, so I can do title and author searches in the awesome bar, or search by tags in the bookmark menu or the awesome bar. I can't combine tags, dang it, but that's probably going to be as good as it gets now.