I recently got the chance to demo a product in development called Ecquire. It's a quick follow-up tool for meetings that I think it has some promise.
Keep in mind that this thing is still in development and is a little hairy in parts. But if you wish you'd read about Gist back in January or maybe Foursquare in July 2009, then now's your chance to try something new while it's not quite fully shined.
Ecquire is a tool to help you respond quickly after having a meeting with someone. It's especially useful if you have standard documents that you send to everyone after your first meeting (general working agreement, standard contracts, whatever).