creative commons

http://www.flickr.com/photos/estherase/516542666/sizes/l/

The getwithit creative commons license states that it is a - Attribution-Noncommercial 3.0 New Zealand - which means the material can be :
Shared or distributed - in sharing the license terms should be made clear and the best way to do this is by having a link to the relevant web page. The material can also be adapted. The proviso is the work should be acknowledged in the manner specified by the author/licensor.However, it should also be made clear that they are not giving personal, specific endorsement to your work. Another proviso is that the work should not be used for commercial gain.
There is also the understanding that the conditions can be waived if there is direct permission from the copyright holder. The material should be used fairly, keep in mind the author has moral rights and consider the issues of publicity/privacy in using other peoples works.
The link above to a photo in Flickr search has creative common rights which are very similar to the getwithit programme. The difference is that the license states that there are some rights reserved and at the bottom is a link to a new version. This new version has a 'share alike' icon which means that the work can only be distributed under the same or similar license.