Thanks for your question achAT - the issue has come up before, and though we have not set guidelines on this matter (It is in progress), I did respond to another member on this page regarding the current situation (Starting from post #302):
http://www.thefashionspot.com/forums...-64912-16.html
If photographs or cellphone images are the only ones available, then scans are definitely okay to post. But otherwise, for now unsolicited rescans will be considered as reposts
If you see requests for a better quality scan, then it should be ok to rescan -- we understand the needs of collectors as well. But (For requesters) please at least take into consideration the tone of your requests

I know some members choose to request privately, since they are still considerate of the original scanner's work.