Team Buying - 2007 version of the Horse Syndicate!
Myfootballclub.co.uk, is an online community that's gathering 50,000 football fans to buy an English football team. Each member must commit to putting away 35 pounds if they get 50,000 members. Then the members get to make all the decisions from what team to buy, to who to trade and at what price.
This has also been happening in the Music Industry with Sellaband.com which lets people buy shares in upcoming musicians. If they get enough shares they create an album of which you get to see the profit from.
Another one to just launch is VIPBandmanager which allows people to be the Music Manager.
This would create a great brand community and the WOM from your new found brand loyalist would be massive. I think it is only a matter of time before a Corporate Brand open up their processes and let their consumers take hold of a brand extension.