So I noticed nothing was hidden, and when I checked my blacklist, I found it empty. Is this a temporary bug in the site, or do I seriously need to filter out all the garbage again?

its happened to me before too! really weirded out by all the furry porn all over my screen lol

I keep a word document with my blacklist tags on my computer and paste it in if it breaks so its quick lol

Damn so is there no way to just get it back?

idk I'm still pretty new here(lol don't look at how many favs I have), I was just glad it wasn't just me

I keep a text document with all the blacklist tags just to make certain I don't erase mine by accident or a glitch in the system happened.

It's saved me a giant headache a few times, i'd give it a try.

Sounds like you cleared your browser data at some point. You could install a cookie manager add-on in your browser to choose which cookies you want to keep for a specific site.