I'm just wondering why no one ever talks about media buys / buying ad space to make money with CPA. Everyone is always going on about PPC, PPV, etc.
But I'm sure many people are making a killing through simple banner ads placed on high traffic websites. However, there are very few WSOs about this method (as far as I can tell) and I don't see threads about it, ever.
Is this one of those "secret" CPA methods that people don't like to talk about because they don't want to see it get oversaturated or something? :p
Is anyone using media buys / banners / whatever as their main source of CPA income? How well does it work out for you?