Tonight, MG Siegler of Techcrunch wrote about a pretty cool start up, Plancast. As usual, his item captures the essence of Plancast succinctly. This one I think has a lot of potential; in a certain sense, it takes social networking to a different, more proactive level. I think this could work well with the younger demographic, too. I signed up but as is generally the case with these nascent services, it doesn't offer much utility until other compadres are on board (see Google Wave). So, if you are reading this, take a moment to sign up  (it literally takes minutes) and let's determine together whether this one has utility.