Licencia del código fuente

Custom License

You can use the source however you want as long as you receive nothing in return, either monetary or in exchange
for services. Use of the complete xpi package must be limited to installation into Firefox, person to person transfer,
and storage purposes. Specifically, the package must only appear to the public for download on Mozilla Addons and
the SpanglerCo websites. "Freeware" and other such software compilation websites may not host, hotlink to, or
otherwise attempt to distribute the package other than linking to one of the allowed websites directly unless with the
author's permission before hand.