Do more with Mountain Lion’s Contacts: Among the many things your Mac is tasked to do is to help you stay in touch with other people. And the first step in doing so is to have some notion of how to contact them—through email, snail mail, phone, chat, FaceTime, and social networking services. The repository for this vital information is Mountain Lion’s Contacts application. Formerly known as Address Book, Contacts is often overlooked, since many people think that the job it handles is mundane. But Contacts has hidden depths, including the ability to pull in Twitter handles and Facebook friends automatically, sync Google contacts, display a map of a contact’s address, and help you put faces to names.