It is absolutely UNTRUE that a Grouply owner (or employee) is an owner (or moderator) of the Emaillist-Managers Yahoo group.
I am one of the three owners of EL-M, my online nick is texas critter, I've been an EL-M owner for five years now, the other owners are Simmie and Jason, Simmie's been an owner for seven or eight years and Jason's been an owner for almost two years now, iirc. (EL-M has been around almost ten years and has had seven or eight owners over the years.)
None of us work at Grouply, none of us own any part of Grouply, none of us invest in Grouply and none of us receive any kind of compensation (monetary or otherwise) at all from Grouply, I've never even spoken to them other than three or four emails and my co-owners haven't talked to them either and have had only a few emails with them.
In the interests of full disclosure, Simmie and I are two of the four owners of the GrouplyImprovements group and the other two owners of that group are NOT employees or owners of Grouply and do not get any kind of compensation from Grouply either.
If anyone would like to verify that I am indeed an owner of EL-M, please send a message to firstname.lastname@example.org and I'll be happy to reply to verify that I received the message and showing that I am an EL-M owner and do know what I'm talking about. :)
The EL-M group archives are also public, you can find announcements posted there that announced when I was made a moderator of the group and then later an owner and also when Jason joined as moderator and then was promoted to owner. You'll also see numerous Admin posts by all three of us at various points over the years signed by us as EL-M listowners.
My source is me. :)