Hello,
I'm looking at ExtJS as a Javascript library for building UIs. It is dual licenced under GPL and a commerical licence.
http://www.extjs.com/products/license.php
Doing some research I came across one blog that suggests that the licencing model is harmful to Free Software
http://pablotron.org/?cid=1556
What is the lists opinion on this? Is ExtJS using the licence fairly and is it considered ethical to use the library based on the blogs criticisms?
Thanks
~sm