title: What are the use cases of Graph-based Databases (http://neo4j.org/)?
body: <p>I have used Relational DB's a lot and decided to venture out on other types available.</p>
  
  <p>This particular product looks good and promising: <a href="http://neo4j.org/" rel="noreferrer">http://neo4j.org/</a></p>
  
  <p>Has anyone used graph-based databases? What are the pros and cons from a usability prespective?</p>
  
  <p>Have you used these in a production environment? What was the requirement that prompted you to use them?</p>