This sort of thing finds it's way into all sorts of forums. I've even seen them in the comments section of newspapers. They are posted by so called "spell casters" and invariably seem to originate in Africa.
I have reported them too Grammaretto. There are 66 posts of a similar nature in the Unanswered forum that appear to have originated from just two different user names. They vary from providing healing potions to love potions and all provide a phone number - I just hope no one on Gransnet gets sucked in!