I'll spare yez all my thoughts on advertising, TV ads and the rest, which would lead to a very long post, but Roger makes a very telling point in that the two most important aspects of advertising are that the name of the service or product should 'stick' in the viewer's memory, and secondly, should increase sales.
Clever ads, Golden Rose of Montreux winners, that kind of thing, are just that -clever and prize-winning, but it's amazing how few of them actually end up shifting more of the product off the shelves. They're more like the BMW Formula 1 racing team. Does that racing team end up selling more BMWs? Is the average F1 fan too poor to buy one in the first place, and is the well heeled typical BMW owner going to buy one based on its reputation despite the racing team? If the BMW racing team ends up finishing last in the constructors championship, will BMW sales plummet?
The best ads are the ones which provoke, are memorable AND which sell the product. Gregor Fisher as the Baldy Man in the photo booth apparently sent Hamlet sales soaring, and it was voted (a few years ago) the Best Advert Ever. And I agree.