To be a responsible digital citizen requires a person to be informed of their rights and responsibilities.
One of the rights is that no-one is allowed to copy your work without your permission.
That is "copyright".
Even if you give your permission for someone to use your work they must give you recognition as the owner of the work. That is called "attribution". In creative commons there are choices to be made by the owner of the work.
What is Creative commons?
Watch the video below to understand more about this concept called "creative commons".
Visit Judy O'Connell's blog Digital Citizenship for Schools-
In her Greasemonkey for flickr post Judy writes:
"Alan Levine has written a Flickr Attribution Helper – a browser script that embeds easy to copy attribution text to creative commons licensed flickr images. Greasemonkey is an add-on for Firefox browser. Once Greasemonkey is installed, you have the ability to add all sorts of magical things to the functionality of your browser."