Apple has built Twitter into iOS 5, essentially making it the default social graph and social network on Apple’s iPhone, iPod Touch and iPad.When iOS 5 is released this fall, device users will able to sign in to their Twitter accounts once and then tweet with a single tap from Apple’s applications — Camera, Photos, Safari, Contacts, YouTube and Maps — and third-party applications that support the single sign-on capability.
Look no further than the Contacts integration as proof. iOS users who perform the single sign-on with Twitter can automatically have their contact records updated with the Twitter avatars and usernames of their Twitter friends.
“Want to mention or @reply to a friend? Contacts applies your friends’ Twitter usernames and profile pictures. So you can start typing a name and iOS 5 does the rest,” Apple explains. “You can even add a location to any tweet, no matter which app you’re tweeting from.”