I am a theorist. I developed a framework to create an open source stock exchange, the concept I call Bitcoin Open Source Stock Exchange (BOSSE).
I have no development experience and will present the idea this May at the conference. The idea is to create a code framework that leverages the characteristics of bitcoin, preventing governmental DOS and allow individuals to exchange stock certificates in a PTP basis.
The model does allow for exchanges, where companies would pay to list for faster transaction speeds, fee for service, something akin to Mt Gox like a currency exchange, but this is for stocks.
If you are interested in hearing the framework, please promote me from Newbie status.
I also have some ideas on how to adjust the BTC production algorithm to allow stability in the quantity of money in circulation as a function of the cost of mining BTC, borrowing from the physical model of gold production here.