News Limited is using its free daily newspaper, mX, to promote sales of the Herald Sun here in Melbourne. All this week, mX is publishing a coupon which entitles the bearer to redeem the Saturday Herald Sun for $1.00 this Satruday, May 30. I like this offer and the use of the free newspaper to drive sales of the paid product. Newsagents are being reimbursed at full value by the publisher.