The content is provided “as is” without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of correctness and relevance to a particular subject. The entire risk as to the quality and accuracy of the content is with you. Should the content prove substandard, you assume the cost of all necessary servicing, repair, or correction.
Yes, Sparky was, is and always will be free of charge.
Sparky is published under various licenses:
To find out, check the packages licenses in /usr/share/doc/ directory.
Copy of the licenses are located in /usr/share/common-licenses/ directory.
Feel free to customize Sparky, and remember about the two simply rules: