Facebook: Do people know if you save on of their pictures?

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i have a ipod touch. i held down on the picture and the option "save picture" came up.

1) where does it go on my ipod? its not in camera roll?
2)will the person know i saved it?

[Sarah :)]

1. The photo should be saved in your camera roll, if not in the settings on your ipod check to make sure facebook has access to your camera roll.

2. No, the person will not know you have saved it unless they see it on your iPod for themselves.