mcbridematt's Journal: What to do with proprietary protocols?

I'm thinking of adding a squakbox client module to my VA-Pilot program so then I can add a VA-Pilot-to-FlightGear data bridge. I read the Developers prospectus and guess what?. It had 'proprietary' written all over it. It [the document] required me to sign a agreement not to 'let anything out' if I want to develop something for this protocol. What do you think I should do?