Sort:  

Thanks. :)

Basically it's about the ability to use someones pics if the photographer / artist / author is mentioned. But with certain terms. I think the best explanation can be found from Wikipedia: https://en.wikipedia.org/wiki/Creative_Commons_license

Here's a short version of the license: https://creativecommons.org/licenses/by-sa/4.0/ and from there you find a longer explanation too.

But hey, than you for giving me an idea about what to write a post about next. Or some day. :)

Thanks. Wikibot is awesome too.

Creative Commons license
A Creative Commons (CC) license is the one of several public copyright licenses that enable the free distribution of an otherwise copyrighted work. A CC license is used when an author wants to give people the right to share, use, and build upon a work that they have created. CC provides an author flexibility (for example, they might choose to allow only non-commercial uses of their own work) and protects the people who use or redistribute an author's work from concerns of copyright infringement as long as they abide by the conditions that are specified in the license by which the author distributes the work.There are several types of CC licenses. The licenses differ by several combinations that condition the terms of distribution.