Pinterest is a visual bookmarking tool. You scan it quickly and find things that interest you. It works because the images are topical. An album cover is usu

Pinterest is a visual bookmarking tool. You scan it quickly and find things that interest you. It works because the images are topical. An album cover is usually tangentially topical. A news photograph may be topical, but you have to quantify what you're looking at by reading the description. That's the beauty of Pinterest: its photos ARE its descriptions. A news site, by comparison, is damned hard to navigate when the articles are not sequential. It's the difference between browsing an old Sears Wishbook and reading a magazine.