Photo Stream is a great tool. If you are like me in any way, and have more than one iOS device (i have an iPhone 3GS and an iPad 1st Gen), and / or a Mac computer, then keeping things in sync has been a bit of a hassle. You had to plug in the iPhone or iOS device to get it to sync, and then if you had other devices you had to go in an manually tell it to share the photos, or at the very least plug in those devices to that computer to get them synced up.
Now, you can turn on Photo Stream on your iOS device and in iPhoto on your Mac (and at $15 it’s a steal), and the photos you take with your iPhone will be synced up real time and wirelessly. Make sure to keep an eye on your Data usage if your Photos are streaming over 3G.
To enable Photo Stream on your iOS device go to Settings, then touchGeneral.
Now, slide the switch to “On”.
Now, do this to each of your iOS 5 based devices.
You can turn on Photo Stream in iPhoto 11 by going to the Menu bar item “iPhoto”, then select Preferences. In the Preferences window you’ll see a tab item labeled Photo Stream. You can turn it on, then log in with your Apple ID and the Photos will begin streaming from your iOS 5 devices automatically.