This is good stuff from MIT's Technology Review mag, even if it's not ready for prime time world wide. According to a 2006 analysis by the U.S. Department of Energy, "General Electric, and the Massachusetts Technology Collaborative, offshore wind resources on the Atlantic and Pacific coasts exceed the current electricity generation of the entire U.S. power industry."
Screw the Kennedy's and the other Cape Wind naysayers who don't want to see 1.5" turbines 3 miles offshore from their luxury compounds. With this technology the turbines can be so far offshore you won't even be able to see them with the Hubble telescope.
Play along, and "the economics of the power industry are approaching a tipping point that will drive rapid adoption of floating turbines." Tipping is what we're trying to achieve, and avoid, at the same time.