Jay Parkinson has recently found a nice service that is in beta version now. It’s called Groundscrew and lets you organize people in real time by combining the power of Google Maps with your online communities and friends such as Twitter of Facebook. For example, I would like to organize free lectures about DNA in order to educate people living in my neighborhood about genomics and health. It’s not that easy to find people around my home but this tool lets me spread the word easily and manage all the people who join the live feed of the event.
Give it a try and see how the demo works.