As well as the Owner of the Year, there are rewards, in the form of Gift Certificates, when the world hits milestones (season 10, original owners got a t-shirt, season 20 long term owners got a variety of GCs for longevity, season 25 approaches with more anticipated). Have also, quietly, spotted owners a season here and there.
If you are new to HBD, we are a helpful group, ready to answer questions or give advice.