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Date:      Thu, 09 Sep 1999 04:02:45 -0600
From:      Brett Glass <brett@lariat.org>
To:        "David Schwartz" <davids@webmaster.com>, <walton@nordicrecords.com>, <tlambert@primenet.com>, <freebsd-chat@FreeBSD.ORG>
Subject:   RE: Berkeley removes Advertising Clause
Message-ID:  <4.2.0.58.19990909035742.0473d2c0@localhost>
In-Reply-To: <000001befa71$c3920e10$021d85d1@youwant.to>
References:  <19990909025443.23751.qmail@modgud.nordicrecords.com>

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At 08:16 PM 9/8/99 -0700, David Schwartz wrote:

 >The rights of the original copyright holder to
>the derived work are precisely the same as to the original work.

Not quite. The original copyright holder can't publish the derivative
work without permission from the person or person(s) who introduced
new material.

This is one of the traps inherent in the GPL. If you publish GPLed
code, and someone else modifies it and publishes an enhanced version,
your original code may now be obsolete. But you don't have the 
right to do what you want with the improved code unless the
person who improved it grants you that right. Since the new
contributor is likely to embrace the GPL's anti-commercial
ethos, it's unlikely that he will grant you the right to
sell the updated version for money. In a sense, your code has "run 
away" from you. 

--Brett Glass


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