[anatari]

This is absurd. While I'm sure there is a lot of fraudulent activity and rubbish ad networks (IE Facebook likes, as claimed by the article), traditional online ads are pretty trivial to track at this point for a business that can complete transactions online. If you run a web store, you can track exactly how much sales you get from a particular ad channel and weigh it against the advertising cost by simply creating a unique link for each channel, or using any of the many available ad analytics platforms out there. Entire multi-million/billion dollar businesses are built around arbitraging this opportunity positively, particularly on Google.

Things like Facebook Likes are more difficult to track and are still relatively new, and that's why many people haven't figured them out yet, but over time they will either reach an equilibrium, where value provided is equal to cost or they will disappear.