Ключевые слова: black, blackboard, blog, blogging, board, business, chalk, chalkboard, chart, communication, community, computer, concept, conceptual, diagram, drawing, flow, graph, handwriting, horizontal, innovation, internet, marketing, media, microblog, net, network, networking, nobody, online, page, search, social, surfing, tech, technology, text, web, website, white, white chalk, word, writing, www,