largest social publishing company in the world, the Website where tens of millions of people each month publish and discover original writings and documents. On Scribd, you can quickly and easily turn nearly any file-including PDF, Word, PowerPoint and Excel-into a Web document and share it with the world.
a social bookmarking website for visual contents - vi.sualize.us (read visualize us) allows you to remember your favorite images around the web, and share them with everyone.
Recently launched science and technology news website from Discovery Communications. It features breaking news and in-depth articles related to the Earth, Space, Tech, Animals, Dinosaurs, Archaeology, Human and History.