His opinion on the GPL:
Thanks for this. This is the perfect page to link to the next time someone tells me that the GPL is "viral".
His theft analogy seems to apply better to the LGPL and MPL than the GPL. The LGPL and MPL make sure that your work stays free. The GPL forces work that uses yours (in certain ways) to be held under the same standard, regardless of how it treats your work.
http://www.oreilly.com/openbook/freedom/ch07.html