72 DPI (ppi) fallacy?

I am clearly one of those who has the 72 dpi (ppi) Web number embedded -
from early training.  Only recently have I returned to a bit of Web graphic
development (using PS7) for Web sites, and happened upon this article:
http://www.scantips.com/basics1a.html
 From the author and taken from the above page - "It is very common to hear
the advice : Monitors can only show 72 dpi so scan (and reduce) all your
web images at 72 dpi.  For sure don't believe that. It is the world's worst
imaging advice."

Another from same author: The 72 DPI fallacy:
http://www.scantips.com/no72dpi.html

Even if one scans at a higher rez, for me the real troubling question
(after retouching, cropping, etc.) is: what ppi should the final graphic be
saved at if it is *only* Web bound without print considerations? If the 
article and his premise are correct in
both theory and practice, what final ppi and/or *model* do you recommend
for saving gifs and jpegs to be used only for the Web?

Assuming I want to keep my total Web page(s) at minimum weight (html and 
graphics) for optimum IP data transfer,and am not interested in how 
something prints, what ppi should I resample at in PS before saving jpeg or 
gif for Web?

TIA, Ralph Rasmussen

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