fandom: Dr. Who, or fandom: House, or fandom: fanfiction/fanart/rp, or fandom: Pokemon/Twilight Crossover with a Bella the Bellsprout and her sparkly vampire virgin pikachu boyfriend
I'd go into effect starting with the next subs post (so everything submitted this week is fine, don't worry). The first comment would still be there for repeats and stuff like that.
SO WHAT DO YOU THINK:
What if the fandom is so small, spilling it would reveal the maker's identity?
If they didn't want to name the fandom, they probably wouldn't name characters or anything, right? So if it were like "I ship this one character with this other one, but no one else does and I feel alone, but this fandom is so small everyone would know it's me // fandom: character shipping"? That could work.
Does the fandom tag have to be on the image itself?
On second thought, probably not. You could just include it in the comment you put the link in, and that would work, too!