[s_m_t]

That is a difficult problem to solve. How do you differentiate between genuine (even if self-interested) self expression and 'advertisement'?

If I think I make really muffins and I want everyone to know is that advertisement and is it a bad thing? Of course, I love my muffins so much that I want everyone to have them so I'm going to have to start charging, because the best way to get as many people to try them is to do it full time. And of course at some point I'm going to have to hire other people and teach them to make the muffins for me because one man can only make so many muffins. I'll probably have to incorporate and buy a muffin factory. And I'm much better with muffins than I am with words so actually the proclamations of my muffin's superiority are going to be designed by a professional.

I actually don't have a way with words so I'm not sure how to wrap this up but it's a piece of my perspective either way.

[Retric]

IMO, simply flat out preventing for profit companies from talking with non customers is probably worth it. Sure, you might end up with some edge cases, but in the end customers pay for advertising and it's often zero or even negative sum.

The edge case is of course. Disease X now has a treatment!

But IMO, if it's important people are going to find out other ways.