Neo4j is being used to solve a "who done it?" problem and build various projects, including a QuickGraph of the Australian Open tennis tournament. The Neo4j community has been actively engaging with the platform through online meetups, blog posts, and presentations at conferences like GraphConnect. Adam Cowley, a featured community member, is working as a Senior Professional Services Consultant at Neo4j, sharing his knowledge on topics such as temporal types, sharding, and journey planning with Cypher. Additionally, Jennifer Reif has created a developer guide on managing multiple databases in Neo4j, while Hongping Liang visualizes data from the Personal Genome Project using the Neo4j Browser. The community is also exploring features like sharding and QuickGraphs to build various projects and applications.