We should follow the SCO vs. IBM case closely, because in a few years there might be a similar attempt to sue Wikipedia. For the paranoids among us: Maybe the Encycloedia Britannica employees have already begun entering masses of EB snippets into Wp articles ... ;-)
From http://www.sco.com/scosource/letter_to_linux_customers.html :
"As you may know, the development process for Linux has differed substantially from the development process for other enterprise operating systems. Commercial software is built by carefully selected and screened teams of programmers working to build proprietary, secure software. This process is designed to monitor the security and ownership of intellectual property rights associated with the code.
By contrast, much of Linux has been built from contributions by numerous unrelated and unknown software developers, each contributing a small section of code. There is no mechanism inherent in the Linux development process to assure that intellectual property rights, confidentiality or security are protected. The Linux process does not prevent inclusion of code that has been stolen outright, or developed by improper use of proprietary methods and concepts."
"As a consequence of Linux’s unrestricted authoring process, it is not surprising that Linux distributors do not warrant the legal integrity of the Linux code provided to customers. Therefore legal liability that may arise from the Linux development process may also rest with the end user."