A scalable social network system using Smart Mobs infrastructure like phones and text messaging can be used for participatory economics:

1) In this system, goods and services are produced according to a plan developed by an iterative procedure of democratic, participatory consumers and producers councils. Smart mobs could optimize the communications and participation at this level.

2) Parecon businesses could use smart mobs by creating a pool of job offers and demands to distribute balanced job complexes in a decentralized way.

I would like to get in touch with people interested in making this an opensource sourceforge project so if you are, or know any one or any anarchist tech collectives that might be interested, let's talk about it/contact me/join the "Participatory Economics" tribe.