I owned forexample.com for 15 years or so and saw all kinds of mail but the most persistent was a record company owner who, from time-to-time, wrote semi-deranged angry emails demanding that I turn the domain over to him. I always had grand plans for the domain but never acted and, a couple years ago, I forgot to renew and the domain is now in someone else's hands. I don't miss it, especially the record company guy.