I would love to prefix all "send to twitter" "bookmarks" prefixed by "RT @blam4c" to not just promote my blog, but also to push my twitter account. Sure, I could change the config-array to achieve that. But it would be nice to have this feature on board by default.
Not sure how this could fit into the "internal" architecture of sociable because the general engine does not really KNOW the services it's going to post to. Maybe we could have an additional, optional "Parameter" for each service? Or just make an exception for twitter? :)