I just had a (rather frightening) thought today. I connected a friends iPhone to my iTunes and dropped some songs and ringtones onto her iPhone 4. She doesn't have a computer. I also have my iMac, iPad and iPhone 4s on that account and have photstream to share my photos between the devices. I just now had the thought that my photos "might" be sharing with my friend as well. Is there a way to see what devices have access to my cloud or on my photo stream feed? I have shut it off to my Mac since it is the Parent device but I fear the damage may have already been done. Now I'm thinking I'm safe because she takes a ton of photos and if photo stream was in sync with her phone I'd get her pics as well, which I haven't, but it's still a mutual case of potential over sharing either way. She signed back into her iTunes account so I'm thinking that was the saving grace here, and/or she hasn't turned photo stream on on her device. Still it would be nice to know how to select what devices are accessing my stuff and how to block some of them.