What's photostream for?
Qoth from skellner: iCloud? You are kidding right? So how exactly does that whole photostream thing work? Nobody seems to be able to explain it. And if all you own is an iOS device (no computer) where do all your pictures go if there is no where to store them in the cloud after 1,000 photos? Dropbox is what Apple always wanted iDisk to be. They turned Jobs down when he wanted to purchase them. Google knows services. GMail rarely goes down and when it does, everyone knows it and is restored in a matter of hours. That can't be said for Apple's Mail service - whatever it's called now (iTools, DotMac, DotMe, iCloud). It can go down and you never hear a peep out of Apple.
I'll try. Photostream, at its simplest, synchronizes my pictures between my devices. When I take a picture from my iPhone and I'm within range of an access point, the photo is automatically copied from my iPhone to iCloud and, if I have my iPad, it's synched from iCloud to my iPad. When I'm working with images from my digital camera in Aperture, I can choose to have them uploaded to iCloud where they will be copied to other registered devices - including my Macbook - so I can look at them there, too. If I've copied the images from my camera to my iPad in the field, I can also import from iCloud into Aperture.
Because pictures are automatically synched between all devices, I can use my iPad as an portfolio when I want to show someone pictures that I've taken without worrying about whether I've copied them there. It's quite nice, actually