According to Wikipedia
The Creative Commons (CC) is a non-profit organization devoted to expanding the range of creative work available for others legally to build upon and share. The organization has released several copyright licenses known as Creative Commons licenses. These licenses, depending on the one chosen, restrict only certain rights (or none) of the work.
You let others copy, distribute, display, and perform your copyrighted work - and derivative works based upon it - but only if they give you credit.
You let others copy, distribute, display, and perform your work - and derivative works based upon it - but for noncommercial purposes only.
No Derivative Works means:
You let others copy, distribute, display, and perform only verbatim copies of your work, not derivative works based upon it.
Share Alike means:
You allow others to distribute derivative works only under a license identical to the license that governs your work.
Attribution-NonCommercial-ShareAlike LicenseUse keywords or tags to find an image that is related to your posts in your blogs and don't forget to write the source where you found the information or images or video or music you are using in your blogs.
Search for Creative Commons images using these sites:
* flickr.com/creative commons/by-nc-nd-2.0
* Wikimedia Commons
Search for Creative Commons audio and music using these sites:
* Jamendo - An archive of music albums under Creative Commons licenses
Source: Flicker, Answers, Creative Commons