Siri can help you post to your favorite social network. If you use Facebook and/or Twitter, Siri offers a bunch of helpful options. You can say "Post to Facebook I love reading Lex and Dan's stuff at Macworld.com," or "Write on my Wall I love Siri," or even, "Post I'm an over-sharer to Facebook." With Twitter, you can say "Tweet I'm eating breakfast" or "Post I'm still eating breakfast to Twitter," along with other, similar variations.
Fun with Settings
Privacy. You don't necessarily want your personal data accessible to every app that asks, and iOS is here to give you the kind of fine-grained control that you crave. Under the Privacy section of Settings you can not only adjust which apps have access to your location, but also prevent them from accessing your contacts, calendars, reminders, photos, and Bluetooth sharing. Plus, if you use Twitter or Facebook, you can decide which of your apps can log in with your credentials. Just tap the appropriate section for any of these and slide the switch for the selected app to Off.
Restrictions. Go to General and then to Restrictions. You'll be prompted to enter a passcode. You can then select which features you would like to lock down on your iOS device. If you're planning to hand the iPhone off to Junior, and Junior has a habit of unintentionally deleting your apps, you can specifically disable that capability from the Restrictions screen. You can also prevent access to the iTunes Store, the iBookstore, Safari, Camera, FaceTime, and more.
Guided Access. While we're talking about limiting what your iOS device can do, now's a good time to mention Guided Access, which you turn on under General > Accessibility. Once you've enabled the feature, go into any other app and triple-click the Home button. That enters Guided Access.
Now, if you want, you can black out certain regions of the current app's interface. Say, for example, that the game your kid will play has an omnipresent Settings button. You can trace a circle around that button, and that section of the app will ignore any taps. The other key feature of Guided Access is that it disables the Home button, so your kid won't accidentally quit the app prematurely. To exit an app in Guided Access mode, you triple-click the Home button again, and provide your passcode.
One added benefit of Guided Access is that it can serve as a better Do Not Disturb, since it silences banner notifications and alert sounds while enabled.