Creative Commons resources can be searched online to find images, videos, music and other media that are licensed for both commercial and non-commercial use. Flickr is a photo sharing site that allows users to upload and share photos under various Creative Commons licenses. When using Creative Commons resources, proper attribution is required, including citing the source, title, creator and license conditions. Videos from sites like YouTube and Zoopy can help explain complex issues and spread information, while the Internet Archive provides a repository of public domain materials.