I'm guessing you mean post content.
It would be extremely difficult, since filter:parse.post isn't passed the viewers UID. Which it should be, imo.
Hello, I need this kind of plugin:
Ex. A user puts his link/content in [hide][/hide] no one will be able to see the hidden content unless replied.
If anyone can do this, could talk about pricing. Thanks in advance
try emailing sales at nodebb.org
This plugin would be nice