Thanks for the comments, Mike. As for the first part, yes, they are already being tweeted by @mfinsiders. But like you said, allowing others to share is definitely a good thing.
But I agree with you 100% on the look/feel. We can put it in several areas of the page, but as you can tell from my first post, we weren't quite sure where that should be. The biggest challenge is that the discussions system works differently than the blogs with multiple pages, and more focus on each subsequent post beyond the original topic. Therefore, the majority of the focus is often with the last post rather than the overall thread. So I was thinking about another option of putting it below the last post in the thread. What do you think about that?
(I definitely appreciate your comments - it's exactly what I was hoping for!)