VentureBeat has launched VentureBoard, “a marketplace for startups”:

(1) It is a place where individuals or emerging tech companies can advertise their products, assets or teams for sale and where established companies can find them.

(2) It is a place for service providers, such as financial, debt, accounting, legal and PR companies, to advertise their services, and for emerging companies to locate services they need.

The basic premise is that most startups don’t have quite the exit that YouTube has had, and that a forum for finding acquirers and selling startups is needed. Brian McConnell describes it as MLS for startups.

Certainly an interesting idea. Several startups have put themselves for sale on eBay, and Kiko successfully completed the sale, so it’s not unfathomable.
I could see it working – plenty of startups will reach the point where they want/need to sell, and there’s no downside to potential acquirers monitoring the board. For the acquirer it’s like cheap outsourced R&D. It’ll be interesting to see how it develops.