I personally believe my job as facilitator is to bring out the conversation in others. Once established, my next job is to get out of the way and be supportive, by connecting, encouraging and guiding. Basically, to shut up and help them to get their work done more effectively.
I have witnessed two types of facilitators (though I am sure there are many different types). One pulls the group along, leading and directing. This style, by the way, is appealing to many groups and can be advantageous to certain types of organizations.
The second, takes the energy and recycles it back into the group. The position of facilitator is more of shepherd than leader, by gently nudging participants away from danger and coaxing them forward - to make it easier for them to do THEIR job. This I believe is my job, which is not to be the expert of their work or to do their work, but to allow them to own their efforts and help to make the journey easier.