When I blacklist a set of tags, it means I don't want pics of them filling up my feed. But while the blacklist "works", it just fills my feed with empty "blacklisted" blocks. What's the point of this? Is it really not feasible to just have them NOT show up?

It seems like you're not using the user script. You'll find it in the stickied thread.

Or just follow this link: hypnohub.net/index.php?page=forum&s=view&id=105958