Web 2.0

Web 2.0 survives and thrives on social collaboration. Take for example, Facebook, it wouldn't exist without the millions of users sharing photos, links, and stories with each other. In order for these websites to grow they need sharing. Sharing recruits new users. Existing users act as brand ambassadors getting their friends and family to join. The keystone of flickr is photographers using the site as a landing place for their photography and to connect with other photographers. Photographers who create groups and forums to discuss photography. Web is founded on the sharing principle.