Are you marketing the site?
I noticed there is a fairly big gap in the post dates. it seems as though it was almost inactive for a while.

Theres not much of a google ranking either. maybe some people who use the site might be able to help with some SEO.

Other than that the site is a FANTASTIC idea. Ive been looking for an active community on business for a while.

Also run a competition to design a logo for the site. and buy (or preferably) acquire a skin for the site to increase its aesthetics.

Im sure we can find ways of getting users to be involved with it all so you dont have to do it all yourself.