Finding Good Pics for Stories

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Hey, I'm a person who likes to tack a nice picture with her stories ideas.  I try to find tasteful (or not so tasteful) pics that match what I have in mind for the stories I think up.  Or sometimes I seen an awesome picture that just inspires me.

I've been using Google Images to find what I'm looking for, but I feel there should be other sources out there I can use.  So can anyone recommend me a sight that has either erotic or non-erotic imagery that would be useful.  Please, absolutely, nothing illegal.