No point there, that's how these threads work. You start with a topic then related, unrelated, and totally-out-there posts folow.
No problem, but if we're going to discuss Congress's poll ratings a thread should probably be created for that purpose. In a thread dedicated to Obama, we should probably focus just on Obama.
That's an option, and may occur... but eh, it's just as easy here, and it is related (poll-ratings of Obama and poll-ratings of Congress). You can always move the discussion back to Obama, but just saying we should isn't enough of a reason... ask something more specific, or less specific, or totally unrelated... it really doesn't matter... but ask something lol