A few weeks ago we explained and showed why GPL is a licence that had already been tested in court. It may not have gotten a victory (nor a loss) in all the courts around the world, but so far it has a flawless track record where people comply rather than complain. The big news today is SFLC's lawsuit against a company as large as Verizon, which only recently joined Google's Android embracers. Android is a phone stack that contains the Linux kernel and Java, both of which are GPLv2-licensed.
Groklaw has the text of the filing (PDF) transformed into plain text.
The same two principal developers already successfully sued Monsoon Media, and they have litigation pending against Xterasys Corporation and High-Gain Antennas, LLC. Here is the press release from the Software Freedom Law Center on the Verizon suit, followed by the complaint as text.