Creative Commons has just released its second version of licenses. Among other things, version 2.0 cuts the number of available licenses to six (from 12), makes attribution standard, and allows an option that may require hyperlinks as attribution.

Currently, SNTReport.com licenses original content on this site through the first version of CC’s non-commercial, no-derivative-works, attribution license (also known as "Attribution-NoDerivs-NonCommercial 1.0"). SNTReport.com will continue to license original content on this site through version 2.0 of the same license.

Creative Commons. Announcing (and Explaining) Our New 2.0 Licenses. May 24, 2004.

Creative Commons. Choose License. No date.

Update: One of the new licenses is Recombo, which allows artists to "sample, mash-up, or otherwise creatively transform a work for commercial or noncommercial purposes," subject to certain conditions.