Mashable have found a bug in Facebook that means you can create wall posts that can’t be deleted.
You can reproduce this by posting something, quite possibly something rude and offensive, on a friends wall, then defriending and blocking them. Blocking them means neither of you can see each other’s posts and walls, and neither of you can see the post. But it remains visible to anyone else who can see the former friends’s wall. Because neither of you can see it, neither of you can delete it either.
Is this a bug?
I would say that it is, and would log it as a defect were I working as a tester for Facebook. Techically it’s a missed requirement rather than simple coding error, but the potential unexpected consequence could be quite serious. There’s quite a lot of potential for malicious misuse of this.
