My suggestion would be for Geocaching.com to send out an e-mail to users immediately after they retrieve a bug for their first three finds or so outlining general expectations and etiquette. It's important that this gets communicated immediately after the first find because there are a lot of one-time-wonder geocachers who go out once, pick up a bug, and never log another cache. By the time the person gets contacted by geocaching.com or another user, the person has long since lost any interest in geocaching. Overbearing? Maybe. But I think it would contribute to the overall satisfaction of those who pay the bills long term.