lowell wrote: >keep your creations hidden, if you wished, a la linksys (and qmail?) > > Not that I disagree with you but for the sake of the argument, I should point out that your Linksys example is a bad one. Linksys must release the source code to their routers because they are distributing the binaries. If, OTOH, they had kept whatever GPL software they were using in-house to accomplish their goals, in-house, then they could keep those changes "hidden" as you said. The GPL establishes a distiction between modification for private use and modification for public dissemination. Modification for public dissemination is the only thing that the GPL has power over.