I may be way off base, but the cynic in me sees your post as related to the recent changes you made with Mixergy. I really liked Mixergy. I turned lots of people onto it. When you decided (almost out of the blue) to turn it into a strictly money making venture for yourself I felt burned. I thought you were following in the footsteps of Charlie Rose's interviews, Paul Graham's essays, or one of the dozens of great Pod…
Andrew Warner developed a product (Mixergy) that creates value for a number of people, and now he is looking to capture some of that value (in the form of profits). Isn't this the essence of entrepreneurship? Why would you feel burned?
Not that I am comparing (or know the technicalities), but hypothetically if tomorrow Ubuntu decide to charge for their linux distro - a lot of people will feel burned. And we can equally argue that they were building a fan base all along.
Such things work best if it is clear from the start that going forward you may seriously look into monetization. Kind of beta phases for most software, Mixergy could also have had some kind of beta phase.