> can we just get over this idea of rational economies, by the way This is key and undermines a lot of rational arguments. People buying ads aren't reading HN

> can we just get over this idea of rational economies, by the way This is key and undermines a lot of rational arguments. People buying ads aren't reading HN and then making a buying decision based on the general vibe they get there. They'll buy based on budget. Budget is based on decisions made in a meeting a year or two before. Those decisions will be based on a strategy. For many that strategy is to the tune of 'I keep hearing about this social media thing that's supposed to be the future. I notice we aren't spending anything in digital. We need to buy more digital'. If public opinion sours on Facebook it may be a while before we see a significant drop in revenues.