Just watching Steve Jobs explaining Photo Stream and I'm wondering if I understand it correctly. He basically said, you take photo's on your iPhone and right away these photo's are beamed to the cloud and downloaded onto your iPad and iMac. He did not say, you would be able to connect to the cloud when you get home and using your iMac or iPad you can stream the photo's and browse them in the cloud, he said, and I quote his words: "It will be automatically uploaded to the cloud, where it's stored and automatically downloaded to all my other devices" I'm on holiday, and take a few hundred photo's, and when I get home, these photo's are already downloaded onto my iPad, which will be on standby but still on, and an iMac which I assume will start downloading as soon as it boots up. The same goes, I suppose for your iMac, you get a load of new photo's on your iMac and they all get sent automatically to your iPhone and iPad. Now, perhaps it's just me, but can't you see a glaring problem with this happening, with hundreds of photo's being copied across all devices automatically? On a full computer such as an iMac it's no problem, as you will have a hard drive with a lot of potential storage. But on the small memory portable devices?