BusyBox is upping the ante on GPL compliance with their new lawsuit against Verizon stating that Verizon is infringing on the GPL (here is the actual filing) when shipping their FiOS routers. For those of you who are not familiar with Verizon, Verizon is one of the biggest telecommunication provider in the United States and FiOS is their version of fiber-optic Internet all the way to the end-user.
Companies like Verizon should really learn not to ignore requests for open source license compliance (which allegedly they did). I suspect the direct and indirect costs they are going to incur for dealing with this publicity is much higher than the costs of any effort to comply with the GPL license. It appears that simple listing companies on a Hall of Shame, like BusyBox used to do, is not the way open source developers are going to enforce licenses going forward.