When dealing with companies that are above a certain size, it takes days or weeks to get to someone that can fix issues, but if you're lucky and you have a friend that knows someone who works there he can expedite your ticket. This service would work like that, a friend that puts you in touch with people hired at big corps.
I'm aware this service would have a number of potential issues, such as how to get employees on the platform without annoying their employers, or how to prevent abuse/bribes, but if somebody find a way..