It adds a note field on each user's profile and posts. You can click the note itself to remove or change it.
P.S: Notes are only stored LOCALLY and will be lost if you uninstall the extension. Only you can see your notes.
Wow, this is a great thing, I am thinking about it for some time. Many times I asked for the possibility to have internal feedback for some users, but I didn't want to leave it public.
it would really be ideal if there was an export/import option because I use BTT on two devices.
following this thread.