A lot of folks seem to be unaware, so here’s a really weird thing about tumblr: if you have profanity in one of your tags on a post, that post won’t be visible to anyone viewing any of the other tags. So if you have one tag that’s “name of show” and another tag that’s “i love this fucking show”, as far as I can tell anyone viewing the “name of show” tag won’t see your post. Seriously, it’s only visible on your blog. Even deleting the offending tags won’t bring it back–you need to delete and recreate the post.
If you’re posting something with the intention that it be seen by people who don’t follow you, make sure to double-check that you can actually see your post in the tag!