I think the profile comments section should not be able to delete by the profile owner.
The reason is that when people do trading they will leave good comments and bad comments about how the trade goes.
The profile owner can delete bad comments as he wish and that's not fair cuz what if thats a scam by the profile owner? the other people will not be aware of it, cuz all they see is good comments.
It should be like ebay system that u can reply to it but not deleting it. Thanks.