I don’t get it. I have quoted Lessig’s response some time ago:
http://melodiefabriek.nl/2005/12/08/lessig-on-sa-without-nc/

But I also am reading that last line in the license:
“For any reuse or distribution, you must make clear to others the license terms of this work. The best way to do this is with a link to this web page.”

This sounds great, but the line about share alik makes it more confusing. Why not simply state:
Share Alike. If you REUSE, DISTRIBUTE, alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one. Putting those two sentenses together.

It confuses me and Lessig’s explanation makes me wonder as well. Lessig says: “The ShareAlike requirement kicks in only if the adopter makes a �derivative work� out of the song.” – but if I am reading that line in the License ‘For any reuse or distribution, you must make clear to others the license terms of this work. The best way to do this is with a link to this web page.’ he doesn’t seem to be right.

Was Lessig mistaken? Let’s clearify this. This is a good discussion :)

I would love to use BU-SA only … or in fact BY only, but that’s still tricky for a business like mine…