In an expanded and slightly different update from a post earlier today, we have the announcement that the Planetary Society, (I'm sorry, but this just sounds like a bunch of people in tin foil hats) is launching a satellite designed to utilize the solar winds: Giant Solar Sails
Solar sailing uses light instead of wind. The idea is that photons - the particles that make up light - have enough energy and momentum to exert a tiny force when they hit the sail and light is reflected. Over time, this steady, infinitesimal force drives the space sailing vehicle.
