Innovation Prize Central - Here's the beginning of their introduction:
IPC is a new destination that will serve as a clearinghouse for all info related to innovation prizes.
The Innovation Prize Central Blog has covered a number of prizes, including some that I haven't run across before.
It looks like the site and blog are associated with the Hidary Foundation. As an example of Hidary Foundation support, Philanthropy Roundtable has a slide presentation on the Progressive Automotive X PRIZE that lists the Foundation as one of the Donors.