It generally takes multiple offenses before we do something like that. From a comment you made elsewhere on this thread it sounds like you've noticed multiple instances of VB baiting HN, but this is the first I can remember.
How about instead of us unproductively arguing about this, you make your point by telling us about some of the popular sites you have banned for baiting HN. I'd be particularly interested in the existence proof of any site that regularly writes positive things about startups that you've squelched.
That'll give us an idea of what the standard is.
Edit: I accidentally wrote that first sentence more combatively than I meant to.
