This document discusses the development of linked open data projects that aim to semantically connect information from various sources on the web. It describes how initial projects used Creative Commons licensed photos and linked them to DBpedia concepts, forming the basis of the Linked Data cloud. Later projects found ways to automate linking images to topics by using services like Amazon Mechanical Turk. The document also discusses business models for linked data and efforts to semantically connect information about different types of real-world entities and explore the global "noosphere" of human knowledge.