This doesn't work. Hasn't been updated to work on X.com or maybe it never worked.

didn't do anything

It's non-functional. Don't bother.

Sorry but nothing is blocked for me...
I still can see promoted tweets and promoted trends.

Finally something that works. Scrolled through twitter for a while but didn't see any more promoted tweets.

ICAN NOT GET THIS TWITTER AD BLOCKER ON TO MY FIRE FOX TOOL BAR