Not really, if Seth Godin started doing this tomorrow on his blog, I will lose all the respect I had for him. He knows that and that's probably why he doesn't do it. And that's why I lost respect for those who do--because it's a sign that they are one of those people who only can see short term and follow what other people say they should do (This practice is pretty much industry standard among shady marketers and "growth hackers" nowadays)