Flickr is an online photo sharing service that offers Creative Commons licenses on your photos. The easiest way to post images online with a Creative Commons license is to let Flickr handle all the hosting, posting, and licensing for you. Start by signing up a new (free) account at Flickr.
Sign up at Flickr here
Flickr offers a variety of upload tools that work within several popular programs, but the easiest way is to upload them directly through their website.
Upload photos at Flickr here
The last step is to apply a license for all your uploaded photos.
Choose your Creative Commons license at Flickr here