Free Knowledge, Thanks to Creative Commons Licenses

mises. If for example the local newspaper wants to report on the results of a student competi- tion, they cannot just reprint the collage with the CC licensed contents, if the NC module is included. This would require the permission of the original author. Since the CC-NC license makes the school a location of free access to copyrighted content, many students gain a false sense of security if they use the same content outside of school. In this case, the threshold of commercial use is ea- sily breached. If for example such content is up- loaded to social networks on the Internet, the mere possibilty of access by third parties (for example other people in the social network) would constitute a breach of the NC module in the license, since the hosters and operators of social networks usuall act with commercial interest. Although the actual breach will, in these cases, be effected by the respective hoster or operator, these companies usually have clau- ses in their usage agreements that allow them to claim recompensation for incurred damages from their users. This is one more reason why you should not use the NC restrictions on content for educa- tional purposes. Especially students should not be put into the situation that their unproblema- tic conduct within school leads to a carelessness that puts them in conflict with the law outside of school. Now, as a creative professional you could take up the position that you will not pursue or hang a lantern on such unwanted breaches of your licenses. However, then you should ask yourself why you had to choose the NC module in the first place (see question 11).

15 How does NC affect mashups?

Not all CC licenses can be combined with each other.

Works that are licensed under CC-BY-SA (At- tribution, Share-Alike) license can only be com- bined and used with works that bear the same license or the freer license type CC-BY (Attri- bution). The combination of CC-licensed con- tent with other combinations of the different modules, especially those without NC module, is not permitted. Thus, severe problems are caused by the fact that licenses have to be compatible with each other if you want to combine contents. This applies especially to mashups, which originate from a culture of free manipulation of content, and consider CC licensing as supporting their cultural values. In fact, however, many license combinations are not compatible, especially NC licenses cannot be combined with other li- censes that do not have this restriction. Furthermore, mashups are often created wit- hout the intent of financial recompensation, which initially makes the use of NC-licensed content legitimate. Later, those mashups can become popular and are republished in blogs and on other platforms. This puts their makers,

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