The really stupid thing is, that if he wanted, he could totally use FB just as a email type service.
He could simply friend the people he wants, make himself unfriendable by anybody else, make himself unfindable, and lock down his setting so can't be tagged in pictures or whatever.
In short, if he customised his profile adequately, he could use FB exactly for what he wants and nothing more. If it's that he objects to using FB at all (because he doesn't like the company or whatever), then it's pretty funny that he asks you to use it in a way that benefits him. It's sort of like saying, "I'm a vegetarian, but if you're buying, I'll have the steak.