Ключевые слова: business, businessman, cluster, communication, computer, concept, connection, cooperation, dataset, date, diagram, graph, greyhound, group, hierarchy, icon, illustration, internet, leader, level, management, marketing, mlm, motivation, multi, multi level marketing, multilevel, net, network, networking, partnership, people, pyramid, quote, social, structure, symbol, system, team, team work, web, wired,