Right, thinking about it, in such short time scale and single man power, a prototype for a new social network is impossible.
So I have decided to go down the other path, and create and implement a API for Facebook or Twitter.
The API would take the 'user status' and put it into a flash application which for me would be able to display the current status of the user that could be put anywhere.
My main use would be for my website and work blog, to incorporate it into a heading section of the site so that views could find out what I am currently doing.
I now need to mess about with the Facebook and Twitter xml feeds to see how best I can get the results.