Doodledog
On one hand we are constantly being told (particularly on MN) that we are all millionaires with untold disposable incomes, and on the other that we are not cost-effective when it comes to ad revenue. Both can't be true.
I think possibly we don't buy what is thrown at us, and largely ignore all those awful promotional videos showing us how to do our make-up or make scones with lemonade! We don't [part with our casheasily!

