Microsoft prides itself on creating an address book that not only contains rudimentary information like mobile phone numbers or emails, but contacts' Facebook information as well. As we got more comfortable with the phone, we explored more on the contacts management aspect in the People hub. Here, contacts can be synced with your Windows Live, Google or Facebook account, allowing you to see at a glance their Facebook updates - think of it as a Facebook+ Address Book app. While the contact list can get quite messy with duplicated information and so forth, you can manually link these together under a single contact. The only gripe we have is that for now, the hub is only fully integrated with Facebook, leaving other popular social networking sites like Twitter, MySpace or Orkut in the dust.
Of course, the consolation here is that it provides a common and uncluttered place for information of your friends or loved ones, and deletes the need to open multiple apps.