Facebook update – potential PLM play?

I haven’t been doing a lot with my facebook account for a while.  However I have been thinking about Facebook as a ‘platform’ (note the lower case p) for PLM applications.  The underlying social networks that Facebook is built on would be a killer way to gather requirements for new products aimed at specific niches, or even test new concepts.  Of course it’s already being used as a recommendation engine to help spur sales of a new product at launch, but what about an app that would let users of a product share their ‘hacks’ with each other.  Perhaps a new way to define the network : the iPhone users network; the Impala drivers network.