We should come up with some way of building a contact-information type page, where people can fill out some kind of form (or make some kind of post, though that would probably be kludgy and hacky) and specify who they want to be able to read it (their trust list, a filter of their trust list, etc). Then, when someone needs contact info, they can just go to a separate page and get all the contact info that their friends have offered, without having to make a post about it.