Do I have to charge money for my photograph?
While we encourage you to set a price for your picture to be purchased, if you want to share the full picture with the world then simply leave the picture cost at $0.00.
People can still "purchase" this free picture. If someone does, you have granted permission for them to use your picture in a brochure, website, personal print, or other one time use. They may not resell your picture. You still retain full copyright, even after a picture is purchased.