That would be great for Twitter too, with the added winkle that you have to wait ten seconds after any reply in a thread, leading to a longer and longer queue of people waiting to add their ten cents, and slowly realizing that what they have to add isn’t all that important after all.
(For serious, it’s been a real shift for me on forums to stop and think “is this really adding anything useful?” It stops a lot of posts that, after I’ve written them out, I realize aren’t saying anything beyond what others have already said.)
