A computer-implemented system and method for creating topic neighborhoods and a visualization for related topic neighborhoods in a networked system are disclosed. The apparatus, in an example embodiment, includes a neighborhood generator configured to receive user input that identifies a topic for association with a neighborhood; create a neighborhood in association with the identified topic; gather neighborhood information using the identified topic as a search term to search from sources including information related to the topic; automatically invite users to join the created neighborhood; and provide access to the neighborhood via a neighborhood visualization on a webpage.