I received three different mails on three different occassions notifying me that I am a prize winner in a draw of Yahoo and that six active e mail users are selected monthly to win a prize. An mail address and contact person is published in the prize winning notification mail with a contact/fax number in London, UK. After sending a mail to claim the prize, no respond was received. The next month the same notification of a prize winning award comes to my mailbox. Is this ligit or is it a scam?