[diego]

For those who criticize the lack of "anything new" in my post:

What motivated me to write it is that in the past few weeks I've met SEVERAL entrepreneurs who are starting businesses that would have no choice but to depend on ads. I'm almost at the point where I want to start a campaign to convince people that this is a bad idea, given how many other important problems are not receiving enough attention. I'm not saying that people should become missionaries. Many of those problems will create huge companies. Data suggest that starting a traffic-driven business today is like starting a new Hotmail.

[jaredsohn]

>given how many other important problems are not receiving enough attention

This would be a good place to mention some of them.

[prodigal_erik]

And some justification as to why they should be expected to be profitable, as opposed to all the problems society pays lip service to but doesn't care much about in practice.