From the FAQ: > Indirect revenue generating activities such as personal images or clips posted on YouTube or Vimeo that may result in advertising revenue are p

From the FAQ: > Indirect revenue generating activities such as personal images or clips posted on YouTube or Vimeo that may result in advertising revenue are permitted. Please include a credit that your work was rendered with Pixar's RenderMan. If you are uncertain as to whether your requirement qualifies as non-commercial, please contact rendermansales@pixar.com for clarification. http://renderman.pixar.com/view/DP25849 http://renderman.pixar.com/view/DP25849