I would be willing to bet that the term appeared on vpmail LONG before 2002.
In fact, it probably originated shortly after the first slot club opened.

I personally don't use the expression, as I find it stereotypical and
demeaning, though not terribly so. Most slot club personnel are not highly paid,
receive few if any tips, and are quite often "out of the loop," when it comes to
the latest info on promotions. And they usually bear the brunt of players'
complaints (along with casino hosts, for higher end players), though that is
not usually deserved. I like to think that most of them are doing the best
they can.
And why "boothling" anyway? Slot clubs today don't really resemble booths,
do they? Why not "clubling" or "slot clubling?" 
Definition of "booth," from an online dictionary:
1. A small, often enclosed compartment, usually accommodating only one
person: a voting booth.
2. A small enclosed compartment with a window, used to separate the occupant
from others: a ticket booth.
3. A seating area in a restaurant with a table and seats whose high backs
serve as partitions.
4. A small stall for the display and sale of goods.
None of these seem to apply very well to a slot club.
Brian
路路路
=======================================
In a message dated 7/31/2008 1:20:56 P.M. Pacific Daylight Time,
jackessiebabe@yahoo.com writes:
If you're a "geek", so am I! I'm sorry I was not as resourceful as
you were when you looked it up in the archives.
Here's a cheer for Bill C. for coining an expressive word that many
of us have used on occasion.
~Babe~
--- In vpFREE@yahoogroups.com, "nemartin2002" <nemartin2002@...> wrote:
No doubt, this post is gonna classify me as a "geek", but I enjoy
trying to "find things out".
Using the 'advanced' feature, I did a search of the archives for the
word "boothling" in the text portion of messages. There are 365
messages in which the word is used. The first time, apparently, that
it appeared in a message on vpFREE was in Bill Coleman's message #8696
on October 27, 2002.
Neil M.
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[Non-text portions of this message have been removed]
during Oct 2000 -- never showing up before, and used