We do an amount of work on PeoplePerHour.com and expect other job boards will be similar.
Ideally, we'd like to add our Client worksteam in as an observer, so we can keep it updated with progress etc, so PeoplePerHour can read that we are working on it, and dont mark us down in their algorithym for inactivity, when we might be doing loads.
However, we can only send into the board via our own email address, or it sees it as spam and well, deletes.