I don't know anything about Joyce Meyer at all. I've heard the name in passing once or twice, but never while in a discussion.
That said, in my studies I have learned that protestants pretty much put capitalism into motion, brought it to the masses, and therefore it is understandable to me that a leader in the protestant world would have a lot of money.
It's early and I really can't think, so I will try to remember to elaborate more later.
Tis better to be a nut than an empty shell.

http://www.frappr.com/expentecostal