The Neo4j team is hosting the GraphGist Winter Challenge, a competition to come up with innovative graph models and example queries. The challenge focuses on six use cases that graph databases are well-suited for, including solving complex relational joins, generating personalized recommendations, and analyzing impact in dependent information networks. Participants have until February 22nd to submit their entries, which will be judged based on creativity and usefulness. The winners will receive a $500 Amazon gift card, and some past winners will participate as jurors to help select the top entries.