Small update regarding Denny Vann.
It seems that his last name is a shortened form of a longer legal surname.

"Denny VanDevier" was answering from the email account kdvdirect@yahoo.com in Dec. 2009, when he was informed that cash gifting was, like chain letters, illegal. Of course, being Denny, he totally blew it off. The scheme in question was 2010 Blessings at the time as well, which places him among the relatively early members in the pyramid.

However, the only postal address I've found tied to that email seems suspect to me.