As someone still using RDF in research / work, always nice to see it pop up on HN. Even if it is nothing particularly substantial.
As for what I'm doing, it's a project that is taking various siloed fan-created data on the web and collecting, aggregating, and transforming it into RDF for the purpose of being queried by researchers. I think RDF and RDF-adjacent things (e.g. knowledge organization, ontology application) are useful here, but the actual querying / data analysis requiring an RDF transformation is maybe questionable.