P.S. I noticed also there the frase "Wikipedia
also
uses text under the fair use doctrine. However, what
is fair for us to use may not be fair for your
intended use of the text. " That troubles me a bit.
What is meant here, is a situation like the following: Let's say John Doe
is a famous poet who wrote many poems about the sea. If we write a Wikipedia
page on John Smith, we may include one of his poems (provided it is not too
long) to show the reader the style and such that John Smith is using. That
would be 'fair use'. However, placing the same poems on our site in another
context (for example in a page on the sea he is talking about), or absent of
any context at all, would not be allowed.
Normally under the GNU/DFL, someone would be allowed to takes a little part
of Wikipedia, or several parts, and publish that as a derivative work, provided
he did that under the GNU/DFL as well and gave Wikipedia due credit. But he
would not be allowed to do the same with the poem on the John Doe page. He
would be allowed to publish the page as a whole, but not the poem alone or
with very little additional text.
Andre Engels