They'd stop
if it stopped working.

But it does work. There are many people out there who need to be asked.

Also, I'd wonder how you'd feel about being simply informed of offers. In WH Smiths, if I buy a magazine, I don't know that I can get a half price bar of chocolate, or Haribo, or whatever. And when the nice young till worker tells me that I can have half-price Haribo with my magazine, I'm not going to turn the offer down.
( Thinker, Wed 7 May 2008, 9:20, Reply)