It is veeery long time from the last post in this discussion. But anyway: if you make money with their masterpiece, you really should share. If you dont, their claim has still a moral backing - my experience - give ceasar what belongs to caesar or do it your way for free. There are enough possibilities in each linux distro to do anything on amateur level. And if you speak about you just wanna try something and delete after, for me it doesnot belong to these categories.