from
http://pixabay.com/en/service/faq/Can I use your images?
You can copy, modify, distribute and use the images, even for commercial purposes, all without asking permission and without paying attribution.
However, depicted content may still be protected by trademarks, publicity or privacy rights. { red flag!}
Why do I find Shutterstock images on Pixabay?
Sponsored images are shown to finance Pixabay and to provide a choice of professional photos. Those images are marked with the Shutterstock logo.
{so right there tells us they are NOT all FREE}
and this is just full of nuggets..
http://pixabay.com/en/service/terms/Images depicting identifiable persons may not be used for pornographic, unlawful or other immoral purposes, or in a way that can give a bad name to people, or to imply endorsement of products and services by those persons, brands, organisations, etc.
Since Pixabay does not require a written Model Release for each Image that has identifiable people on it, We cannot guarantee that you will be able to use the Image for any purpose.....We do not represent or make warranties whatsoever as to the legality or validity of it.
Furthermore, certain Images may be subject to additional copyrights, property rights, trademarks etc. and may require the consent of a third party or the license of these rights. Pixabay does not represent or make any warranties that it owns or licenses any of the mentioned, nor does it grant them.
and this, leaving the user fully on the hook:
Pixabay cannot be held responsible for any copyright violations, and cannot guarantee the legality of the Images stored in its system. If you want to make sure, always contact the photographers. You use the site and the photos at your own risk!IndemnificationYou agree to defend, indemnify and hold harmless Pixabay, its subsidiaries, affiliates and contributors against any claims, damages, costs, liabilities and expenses (including, but not limited to, reasonable attorneys' fees) arising out of or related to your conduct, your use or inability to use the Website, your breach or alleged breach of the Website Terms of Use or of any representation or warranty contained herein, your unauthorized use of Images, or your violation of any rights of another.
Warranty and Liability
THE WEBSITE AND THE IMAGES ARE PROVIDED "AS IS". WE OFFER NO WARRANTY, EXPLICIT OR IMPLIED, REGARDING ANY IMAGES, THE WEBSITE, THE ACCURACY OF ANY INFORMATION, OR ANY RIGHTS OR LICENSES UNDER THIS AGREEMENT INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. PIXABAY DOES NOT REPRESENT OR WARRANT THAT THE WEBSITE OR THE IMAGES WILL MEET YOUR REQUIREMENTS OR THAT THEIR USE WILL BE UNINTERRUPTED OR ERROR FREE.
PIXABAY SHALL NOT BE LIABLE TO YOU OR TO ANY OTHER PERSON OR ENTITY FOR ANY GENERAL, PUNITIVE, SPECIAL, INDIRECT, CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR LOST PROFITS OR ANY OTHER DAMAGES, COSTS OR LOSSES ARISING OUT OF YOUR USE OF THE WEBSITE OR THE IMAGES.