If you’ve signed in to your Twitter account in iOS 7, Safari can display all the links tweeted by your friends. Tap , and then tap to view Shared LInks. Note: Sign in to Twitter in Settings.
To save a photo or video you received in Messages, tap the photo or video to open it fully. Tap . Then tap Save Image to save it to your Camera Roll. Tap to see more of the images you’ve exchanged with someone in a conversation.
To share the URL of your current webpage, tap , then select if you’d like to share by Mail, Message, Twitter, Facebook, or AirDrop. To share just the text of an article, tap if available, then tap .