So how much will it cost to join? How much does it cost to bid on projects? How much does it cost to post a new project? How much $$ for all of the other amenities you are describing as well?
And what are your thoughts on the philosophies endorsed here: http://www.no-spec.com/
? Do contracters/companies "compete" for projects and "bid" on them at your site, only after forking over some cash in the process?