From The Site:
"With a passion to connect more people to the growing movement of Business as Mission this Network was started in early 2006. By providing news and information on various resources and companies we hope to inspire and connect others to opportunities to get involved."
I would say they fulfill there purpose very good. They offer news of Christian companies and ministries that come together to offer help for those in marketplace ministry. You can check here for conference dates and profiles of who is putting them on.
And if you are wanting to know what opportunities there is out there to be a tentmaker, working missionary, bi-vocational, lay missions or whatever you want to call yourself. This is a good place to go.
As far as site presence, they do a good job with their page. It is more like a blog, but does what they intend to do.
Check them out soon.