Voodoo Chain-letter dollar bills?

Factual Questions
1

I just got a dollar bill back from the McDonald’s drive through that had writing written in the margin on the back side. I put my Egg McMuffin aside and read it, hoping for a rant. No such luck. In teeny-tiny print it said

Anyway, what I want to know is what’s the point? I understand the gimmick of pyramid-style chain letters (“put your name at the bottom of the list and send a dollar…”): allegedly the person can make a few bucks (they can’t, but that’s the lure, since the system at first glance seems logical). But what’s the point of something like this?
Do people actually believe it? How is there a cause and effect linkage between good luck and defacing currency?

Is there some sort of evil Anti-Capltalist GAWD who takes the defacing of currency as obeisance and rewards his loyal minions with good luck?

Fenris, interested in the psychology of the whole thing

2

These are “do-gooders” who want to see their name in lights. There’s always the possibility that this will become a fad and that they can say “Look, I started that”. Of course, they could be just plain a-- holes.

3

I’m surprised this is the first one you’ve seen. They’re pretty common; in my experience most of them refer to “St. Lazarus”. These Lazarene bills usually promise luck if you write the message on ten bills, etc. I never do, but to make your daily cash transactions more interesting, check out wheresgeorge.com.