In a Flickr thread about the Creative Commons, one commenter laments what she thinks is something that prevents her from making money. I have to admit, I don't understand the resentment that people who charge feel towards people who give it away (it's been happening since people started charging for stuff), but it reminded me of the episode where Krusty held a comeback show, but not before finding himself penniless.

[Bart sees Krusty standing in the street holding a sign that says "will drop pants for food".]
Bart: Huh! Oh no! Krusty are you making any money?
Krusty: Nah, That guy's giving it away for free! [points]
Crazy old man: Old gray mare, she ain't what she used to be, ain't what she used to be, ain't what she used to be...

And later:

[Krusty turns on TV and finds the Crazy Old Man in his underwear dancing.]
Crazy old man: Old gray mare she ain't what she used to be, ain't what she used to be, ain't what she used to be...
TV announcer: And now the Crazy Old Man Singers.
Crazy Old Men: Old gray mare she ain't what she used to be, ain't what she used to be...

(I found the quote at a Yahoo! Answers post, not at the snpp.com episode guide, where I expected to find it. Also, I changed it to the American spelling, despite, as a good Canadian, my preferring the British spelling.)