[gaadd33]

Coca-Cola advertising isn't product advertising, its brand advertising. The intent is to keep their brand in your mind when you are shopping so when deciding between two essentially equivalent products you will lean towards the one you remember better. This sort of advertising tends not to have a strictly measured ROI in my experience since its hard to measure the "value" of wrapping a subway car in Jameson ads.

Product advertising is advertising a specific product and the ROI on it is usually closely measured when it comes to channels that can do that such as banner ads. While you are quite well informed and get information about all the new products you care about via other channels, most people are not hence the need to make people aware.

Without making "the masses" aware you end up with product usage/growth spreading virally which while it might be "better" is a lot harder to predict or model production levels or possible ROI on an initiative. For example, the Taco Bell Doritos Taco would have probably become popular after a while but that would lengthen the payback period for redesigning the menus/training staff/etc, alternatively you could do partial rollouts but that defeats the economies of scale.

While its not perfect, or anywhere near, advertising does serve a useful purpose and until the economy changes to not reward advertising initiatives we will sadly have to deal with it.

[disgruntledphd2]

Well, in their defence, Facebook appear to have made an attempt to measure brand advertising: http://www.slate.com/articles/technology/technology/2013/03/...

Its an interesting approach, but that might just be because I'm a data nerd.