If you're going around posting people's personal information for no real reason other than just to annoy them, then that's trolling, which is not allowed.

Dox is currently more-or-less allowed for two reasons:
- It is sometimes useful when dealing with scammers for the community to collaboratively investigate the scammer. There have been a few cases where these collaborative investigations have led to good results.
- It is very difficult to define a consistent line between reasonable public information and non-public dox. For example, on Reddit the admins will sometimes delete posts which reference someone's real name even when this name can be found on the first page of a Google search for their pseudonym, which is ridiculous.

This is something that I've been thinking about for a long time. The current rules are sub-optimal, I think, since it's too easy for innocent people to be hurt. But at the same time I don't want to ban "personal information" entirely, due to the above two reasons. Maybe dox should be restricted to an "investigations" board which is only viewable to Jr members and above, or something like that.