Ask HN: Real Posting Middleman Service?

Looking for a multi-point posting service that just wants to be a middleman, not a content host. I'm looking for a service that would enable me, from a single point, post messages to my blog, Facebook, Twitter, LinkedIn and other such services without hijacking the link-backs like Posterous.com does. Posterous has an agenda of getting me to switch my blog to their service and get users to view all updates and post there, but that's not in the cards for me or a number of my colleagues. We're willing to pay a modest monthly fee to get this service. For instance, the base premise of posting everywhere would function as posterious does but with links pointing to the destination, not back to the service. However, the service can still have it's own page, but where posterious would show your blog posting or images, etc, this service would just display the link, or a paragraph in the case of a blog, followed by a link to the actual source. Essentially serving as a directory back to the respective services. Essentially is there a service out there that just wants to be a middleman and doesn't have aspirations to be a blog or content hub?