Core studio have released the alpha version of Platypus, their plugin for Grasshopper (Rhino) that allows for models to sync in realtime through to the web in multiple sessions. While I personally would love to be able to squeeze in time to learn more Rhino/Grasshopper, there are many who already do and being able to show off a parametric model live like this is certainly one way to share things with people. Whether some sort of video streaming actually delivers more capability will be interesting to see, this method can let other people control the model, while a video stream would deliver all the functionality at the host end including rendering, slicing, view presets etc etc. Either way this is pretty cool: