Wikis are largely about creating, organizing, and sharing knowledge. Most people think of textual and static graphic information created, organized, and maintained by groups of people when they consider what makes up a wiki. The integration of visualization tools is one of the more interesting developments in wikis recently though. As an example, the Thinkbase tool provides an ability to visually navigate and explore Freebase, an open, shared database of the world’s knowledge. The Thinkbase Blog is a good resource for learning about Thinkbase.