Well of course, everyone wants free stuff without paying for it. That's just as much an economic principle as the one you brought up. However, I don't think se

Well of course, everyone wants free stuff without paying for it. That's just as much an economic principle as the one you brought up. However, I don't think services which offer a free-but-with-ads-version are the issue here. After all you could just not use those services. I think the way bigger issue is the ubiquitousness of advertisements/spam in our daily life. Most e-mail traffic is spam. If you walk around in your city you most probably get to see an ad every couple of meters. And this is not just your local butcher putting up a sign with today's specials. These are footholds of international corporations which manipulate your emotions so they can sell you their shitty products (Oh, I forgot, it's not shitty, after all if I believe the ads your corporation somehow has some deep connection to my family life and that's what makes the product so great!) How it ever got like that is insanity in its own right. Now giving these public space polluters another tool for manipulating people? I can't see much good coming off of it.