I’ll cut right to the chase… I have a love/hate relationship with the GPL model. Ok, perhaps “love/hate” is a bit strong, but I do choose to look at the GPL as objectively as I can.  In doing so I see the tremendous benefit the WordPress community has derived because of the GPL. But  I 

More at: http://weblogtoolscollection.com/archives/2010/02/14/the-good-the-bad-and-the-ugly-of-the-gpl-model/