When BitTube's AirTime browser extension is activated in 3 weeks, it will pay publishers for content and readers/viewers for consuming that content, while blocking ads. So if Steemit does display ads on its site, I won't be seeing them because I will be using the extension and getting paid for it. The beauty of it though, is that Steemit will get paid for it also, just by viewers browsing its site. No ads necessary.