Fair use describes conditions under which copyrighted material may be used without permission. If a work is not copyrighted, it's in the public domain and fair use does not come into play, since public-domain works can legally be used for any purpose.
Citizen Journalism - If you capture a news event on a camera or mobile phone, either as a photograph or video, some popular news websites may be interested in those photographs and video clips. Here are some places where you send those photos and video clips.
Picnik, the world’s most favorite online image editor, has gone premium. The basic image manipulation features and some photo effects in Picnik are still available for free but the real impressive stuff like Pencil Sketch, Polaroid frames, Drop Shadow effect and the stylist text fonts require an yearly subscription of ~$25 (same as the cost of Flickr Pro).