Pay humans to engage in ads, not LinkedIn
nexertise.com
nexertise.com
Imagine any avenue students use to cheat at classes and I think many of them apply to this system.
In other words by a user providing feedback he is proving to a degree that he "understood" the product. That is what he gets paid for, and that is what the companies pays for.
Could revolutionize HN which is currently flooded with people who desperately want attention for things that don't deserve it.