Been thinking about it as well, at least just to be able to write a bit longer tweets as I'm not really known for keeping my sentences short around here. :P
That said posh will unfortunately hit quite a roadblock soon due to twitter's API changes so we may have to go back to asking authors and sharers to manually place comments with twitter embeds that we'll curate instead and distribute some tokens out at the same time.
RE: I'm thinking about going 'reply-guy' on twitter