a rule for spaced text?

["Michael W.Cocke" <co...@catherders.com>]

Does anyone have a rule to block text with excessive embedded spaces
in it?  Like:

T h i s   i s   a n   a d v e r t i s e m e n t  f r o m
H a p  p y t o h e l p .b i z
B   o   x   2  70 0 2 9 
L o u i s v i l l e  C o
8 0 0 2 7

U p d a t e   a d v e r t i s m e n t   s u b s c r i p t i o n   a t
b o t t o m  o f   w eb p a g e


Seems to me that text with as many spaces  as non-blank characters
(+/- 2) in it should be filtered.  Thoughts?

Mike-
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