I'm going to define it as: Anything remotely involving tracking down someone's location - such as city, town, street address, phone number - or harassing them on other sites such as Facebook or YouTube, especially suggesting doing things to them that would or could be considered criminal.
Rule Nazi's will be the first to die, so don't even try it.
Is what I do okay?
Nothing anyone does here is ok, not by any standard. But what you said sounds fine.
You might say that you can't control all that members do, however why do these things happen? Because there is an audience here. Remove that audience, and any incentive for this harassment ends, as there's no purpose in committing it without an audience to boast about it.
I have considered "removing the audience" many, many times.
DU (correct me if I'm wrong) is concerned with bringing IRL stuff into this board that might have repercussions involve work.
Fixed.
Beyond that, it's up to your good sense to not inspire the anger of the Allmighty Despot of the Codex.
And this.
He can't and won't make a literal rules that covers all bases, that's not even how real law works. It's also why most forum rules fail so hard (their moderators and users think this is achievable).
Also this.
The current rule only talks about stalking, unearthing a member's location, or harassing him or his relatives on other sites, not of outing him with pictures or an unearthed name posted without permission, which can have very undesirable consequences due to search engine poisoning, and logically lead to what is currently forbidden anyway.
All of that could, in my mind, reasonably constitute "stalkery bullshit". It is difficult, given how many people have posted their real names and images - but basically:
a) "Hey guys, here's a picture of me, my house, and my cat. You can find my real name is Tom Dickleseed with a half decent investigation.", "Dickleseed. Ho-ho-ho.", "Hi Tom, how are you?" -> is relatively fine.
b) "I know where you live, I'm going to rape and kill you, Tom", "I found your sister's YouTube account and posted on it what I'd do to her", "I called your home, your mother answered the phone and I told her you had AIDS" -> is not fine.
While A may lead to B, it's mainly when things actually do reach point B that I will be clamping down on (and that may be a thread at point A, that later ends up at point B after-the-fact - or in an incident that occurs off-site). Like all our rules, other moderators interpretations may vary. But my advice is to refrain from saying anything that may be interpreted in a threatening manner, even if it's just a joke.
Now of course, I have no control over what anyone does on any other website. However, we do have spies in IRC, so don't be surprised if what you talk about there (or even if we find out through other means), results in problems for you here - should we find out about it.