Not before they actually confirm that they understand how stupid they were.
Concerning suspicious links is there anyway that we can check the link before we click it? I'm not talking about somebody ingame shouting "CLCK THSI LINK 4 FREE TC!!" I'm talking a random stranger who sounds legit and posts a link, whether ingame or in forum, saying "check this out guys" but your still weary of the link. Is there a not so overly complicated way to check it first or should we just not click it altogether?
Have you ever considered implementing some sort of new system, to make dictionary attacks/whatever they use nowadays ineffective/inefficient? Such as a pin/key word when a user logs on from a different IP address, which will not let the hacker access the user's items(The system makes that ip the home address if the pin/key word is answered correctly)?
Short answer: Yes
Long answer: If you do share it with your great grandpa, and you're using the same machine, then it's hard/impossible to detect, so you can probably do so without any harm. Keep in mind though that if found out, it will be dealt with. Especially if your great grandpa is a douche who can't behave ingame this presents a problem for you, as you are responsible for being the only person who uses it.