Quite a number of images used on the Postcardz website are available for anyone to copy and use, provided they do so under the terms of the GNU Free Documentation License (sometimes referred to as 'copyleft'). The licence basically allows you to copy, reproduce or change the images, as long as you grant other people the same rights as were granted to you. (You can't copy a map for example, make a minor change and then claim copyright of it). You also can't put the image on the front of back cover of something.
For more details please refer to the GNU Free Documentation License or contact us if you have any questions.
Please be aware though, that only some images are copyright free, and almost all pictures and text in this site is protected by copyright. If in doubt, just ask. We are usually happy to give permission to use our images, but we get cranky if they are reproduced without our consent.
For more information please review our copyright notice.
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