You may use this template for whatever purpose,
so long as you don't claim the work as your own.
I don't need a link back to me but I ask that you
leave the link to getfirefox.com in the footer or
somewhere on your site (or better yet,
<a href="http://www.mozilla.org/products/firefox/buttons.html">get a button</a>).
If you use the template I'd love to see it,
you can contact me at jojohippo (at) gmail (dot) com.