Stephen Paulin says in this message that he has "never sent SPAM or bulk mailings." That claim is similar to the the familar "You are not on a mailing list" assurance in this unsolicited "Advertising" message. That message certainly looks like part of a "bulk mailing."
We exchanged some mail:
I was finally moved to promote Mr. Paulin's objections to the list of objections by his amusing claim that because he hits each of his spam targets only once, I erred in adding developerskingdom.com to the Rhyolite Software list of unwelcome domains. I assume that my supposed mistake is related to his care in not sending any single target more than a single copy of his unsolicited bulk mail.
Contact vjs@rhyolite.com but not this spam trap.