Naah! not possible, way too much coding will be required. I am working on a similar plugin with the capability to capture a FB app ID from the user. This plugin currently uses a proxy site https://sopresto.socialize-this.com/ to get a facebook App ID. And will need the whole core to be rebuilt if a custom app id needs to be added. Its a shame they went after fame developing such a plugin.
Its like a whole new way to screw the wordpress ethics of being a complete open source.
http://www.maniacnation.com/
