I used to work for them in their bulk mailing department whilst I was at college.
People do win as they were often having parties for winners to celebrate at the head office
BUT.... the chances are very slim....probably similar to winning the jackpot on the lottery, belive me they send out a hell of a lot of those "you have been specially selected" letters....like millions!
at then end of the day though...you've got to be in it to win it
Interestingly, I've never had any letters from them