> If you put your information freely on the web, you should have minimal expectations on who uses it and how.

Does this only apply to "information" or should we treat all open source code as public domain?

In a lot of circumstances, that is exactly the case. What the open source license stops is redistribution under terms that violate the license, not usage itself. An individual can very well take your open source code, make any changes they want, compile and use it for their own purposes without adhering to the terms of your license - as long as they don't redistribute it.

All "open source" code was already pretty much public domain. All they'd have to do was put a page of OSI-approved licenses up on the site, right? An index of Open Source projects and their authors? Is this more than a weeks work to comply?

Free Software is the only place where this is a real abridgement of rights and intention, and it's over. They've already been trained on all of it, and no judge will tell them to stop, and no congressman will tell them to stop.