WHICH PICTURES CAN I UPLOAD?
(photo by Colin Kinner Flickr)
You can upload images you created or took or copyright-safe material.
Respect intellectual property rights (of video, images, texts)!
Where can I find material (photos, videos, presentations, music) that is copyright-safe?
in Google search for Creative Commons contents
Flickr for pictures
Jamendo for albums
and general media at spinxpress.
The Wikimedia Commons, the multimedia repository of Wikipedia, is a core user of the Creative Commons licenses as well.
For further information, have a look at the Creative Commons website.