I don't buy it. You act like things didn't exist before internet advertising. Usenet and forums existed and thrived for a long time before people started trying to show ads. I couldn't care less if the whole internet ad based economy caves in on itself (not that I think it ever would--advertisers will always find a way). We'd be left with people doing stuff for the sake of doing it and that won't be a bad place. Possibly not as polished, but I'll get over that.