Even wonder why Tumblr sometimes doesn’t seem to tag people when you… um… tag them?
This drove me nuts last year and I did some work to dig up the answer.
Apparently, Tumblr limits functional tags to twenty per post.
At least this was the situation last year, and judging by the complaints I’ve seen recently I doubt it has changed.
The only workaround I’ve found is to make several posts. Annoying, yes. Understandable? Partly, because it probably prevents spambots from tagging 8243658723465 people with their p0rny nonsense.
There’s also the fact that not all users’ tags activate when you type @ and their name. There’s actually a workaround to that one.
I tend to recommend that if people want to keep updated on my fic stuff, they should subscribe to me on AO3 instead of relying on Tumblr tagging.













