I'd say с любопытства is strongly colloquial, if acceptable at all. С instead of из is indeed used, but in a limited number of cases (с тоски, со скуки).
Did you mean "с любопытством"? Because as far as I know there is no such thing as "с любопытства". С любопытством - with interest из любопытства - because I was curious.
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Date: 2008-11-20 03:36 am (UTC)no subject
Date: 2008-11-20 03:40 am (UTC)thank you
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Date: 2008-11-20 03:41 am (UTC)duh
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Date: 2008-11-20 03:53 am (UTC)no subject
Date: 2008-11-20 04:47 pm (UTC)no subject
Date: 2008-11-20 04:29 am (UTC)С любопытством - with interest
из любопытства - because I was curious.