forums.stardock.comは安全ですか？

On the Stardock forum, several customers complain that, although having unsubscribed from the newsletters distribution, their mail box keeps being, flooded regularly with products adds. What makes it worse, there is obviously no provision for deleting one's personal account, according to the reply given on their forum: "If you do not wish to use the account, simply refrain from using it. There is no provision to delete accounts from our databases." What about the respect of privacy?