Sure its no big deal to ignore a thread or to scroll down - the efficiency is in having one place to discuss details, rather than having three places where things are being discussed. And - factor in that there are inaccuracies in the Buzz discussion of the Hilton promo. Not to say that there are no inaccuracies in the Hilton forum, but do you want to have multiple conversations discussing the same things.
I do not know how to implement this - but some clear guidelines from Randy would help.