Says everybody until they are wanting to advertise their own product.
You're assuming that most companies have decent metrics.
I don't know if I believe that... I can see companies falling for the politician's fallacy (We must do something -> this is something -> we must do this). They have money to spend to promote their product, advertising is a well known way to spend money to promote a product, therefore they buy advertising.
...because most of the rest were for products I already wasn't using.
