The site maintains a strict policy of only having content that is of value to the public in some way. Content should be thoroughly worked on before submission, and a node will be unpublished if something remains seriously wrong with it for a long period of time.
When possible, you should use an Open Source Initiative approved license. DO NOT use another person's work without permission! If this is not the case, read the comment of an Administrator or Moderator on your node that explains the licensing issue.
Refer to the Packaging Guide for information on how to fix this.