> http://www.emorywheel.com/vnews/display.v/ART/2003/10/10/3f86484674de4

These are serious charges, and I would have preferred to see more
proof than this article provides.  Fortunately, proof in such cases is
usually, but not always, easy to come by.

I've done a quick analysis on various emails from people with Yahoo
accounts, and determined that in all cases that I have seen, Yahoo
gives the ip number from which the email was posted to their servers.

In the header of each email message, there is a line of this format (I
have anonymized this by changing random digits to prevent any possible
privacy violations for this randomly chosen correspondent of mine):

Received: from [206.38.133.91] by web21307.mail.yahoo.com via HTTP; Wed, 01 Oct 2003 
18:29:48 PDT

The number in brackets, [206.38.133.91], totally fictitious in this
example, is the ip number of the computer from which the email was
sent.

For any given user, this ip number may be stable over time (if they
are on a fixed ip number, as at a University local area network, or if
they are on a dynamic ip number that doesn't change often, as in DSL
or Cable Modem).  Or, if the user is a dialup user, it will usually
(not always) be drawn from a fairly consistent pool, and will only
really be stable over a single dialup session.

This is easy for a clever person to disguise in many cases -- just be
sure to dialup to totally different ISPs for different personas.  But
no one has ever said that John Lott was not clever, and his alter-ego
was exposed in the same basic fashion.

I am cc'ing this to [EMAIL PROTECTED], and perhaps he can study
the emails in question to make a more specific determination.

--Jimbo

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