How about having a little "-" next to tags to allow us to blacklist single tags easier than having to do it manually through settings?

That way, when people flood uploads of little johnny's mspaint masterpieces that they found off of their favorite digimon smut yahoo group, people who do not enjoy them don't have to go through that much of a hassle to blacklist them.

e621 is kinda like the opposite of furaffinity. Instead of knowing who to watch, you need to know what to blacklist.

Thoughts?

No. Because there's already a little + in places that adds the current tag to your search. Having the - add to your blacklist IS the 'opposite' of that, however, far more permanent.

I could see a use in, say, being able to click on the ? next to the tag and getting a "add to blacklist" option on the resulting page, but...

Personally, I can see the flock of 30 digimon pieces from the thumbnails and avoid them with just a tiny bit of mental effort, but... :P