The Cloud is a wonderful thing. The only problem is that people don't really understand how it works. Imagine the Cloud as a hard drive in the sky. If you put a photo in there and you delete it from your computer, it is probably still in there. Photostream takes cloud storage to the next level by not only storing the photo in the ether, but also pushing it to your other iPads, Macs, and iPhones. Your girl may suddenly have a half-dozen opportunities to stumble upon that topless selfie that your new friend sent you. Just because you deleted it in one place doesn't mean that it's gone.