As long as you report them and they are obviously hacked/cracked/stolen then it is highly likely that they are going to be removed. I remove after I see a reported thread. There isn't a fixed rule in regards to this.
However:
17. Trading of goods that are illegal in the seller's or buyer's country is forbidden.
it is indirectly affected by this rule. Such accounts are illegal everywhere. We'll have to wait for theymos to make a statement in regards to this (there have been some in the past).
According to the stats of my reports nothing happend or a mod choosed to dissmiss it. I reported only three thread were the op stated the accounts were hacked. I might recall my stats wrong but it seems so. I will just go on and report everything that smells fishy.
@Minifrij i might be wrong on this but what bob does is not the common rule. He gives away stuff without asking for something or if he asks people know already there is some kind of reward. I like bob but the digital good section is not full of bobs giving away "expensive" stuff for for cheap because they want other people to jerk off without getting poor. Thats a fact and that logic works perfect in life. But please proof i am wrong.
Edit:
https://bitcointalk.org/index.php?topic=1327486.0 i would love to learn that this is legal. I just would like to know why i can buy accounts that cheap. Shouldnt be a problem to explain it if its legal.