What's a project?
Creating a project is the first step when dashboarding content and utilizing the Threat Analytics API. A project is simply a way of grouping pieces of content, or authors of content. If your plan allows for the creation of multiple projects, you can use this to differentiate the efforts of different teams, or different products, or different groups of users -- it's up to you.
Projects are also physically separated within the database, not just virtually demarcated. This provides additional security and performance.