About one third of all of the protein in your body is collagen. Collagen is a major structural protein, forming molecular cables that strengthen the tendons and vast, resilient sheets that support the skin and internal organs. Bones and teeth are made by adding mineral crystals to collagen.
User-generated content. User-generated content (UGC), alternatively known as user-created content (UCC), is any form of content created by users of a system or service and made available publicly on that system.
User-generated content was featured in Time magazine's 2006 Person of the Year, in which the person of the year was you, meaning all of the people who contribute to user generated media such as YouTube and Wikipedia. A precursor to user-generated content uploaded on YouTube was America's Funniest Home Videos. Motivation for creating UGC