The hare, are you not a native English speaker? The reason I ask is that from the following
You actually stated in public that the posts made under my previous user
name would be deleted. They where not deleted, and they remain.
"you can rest assured that if you want your 'contributions' to T2W erased, I shall add my name to what will doubtless be a long list of applicants who will be delighted to fulfil your departing wishes"
You seem to interpret this as though Timsk has promised to delete your posts. That is not what it says. I would add my name to the number of people that would like to see David Cameron removed, but that does not mean I have removed, or will remove, even if it was in my power to do so. It just means I support the removal.
As for the rest of the thread. I believe that any bulletin board or company for that matter, holding personal info about a member, has a duty to remove that if:
1) it causes the member distress. So any decent reason from Arabian as to why it is affecting or will affect his life badly, constitutes a good reason to remove those particular posts, and to keep these posts is morally, and possibly legally wrong.
2) it is of no more use to the board. If Arabian leaves, is banned or account deleted, I don't think that his posts containing anything personal should remain forever. There should be a time limit on personal info.
Also, if it prevents someone with good trading knowledge from posting anything of value in future, then there is an argument to be made that overall content would be better if you gave him his wishes and allow him to return under a different username.
I understand that removal of posts can disrupt threads, but I don't believe Trade2Win holding posts against the posters wishes encourages people to post useful material.