I think I need to draw a diagram for myself, but I think I found a way to use Ping.fm for more than just seesmic.com.
The schematic includes twitterfeed pushing my blogger posts to both twitter and to ping. In turn, facebook brings it in from twitter with the status update and a link. The feed to ping pushes it out to all my other spots, and you never have to use ping except for the setup.
I need to draw a diagram.