[OpenFontLibrary] CC Attribution Share Alike Licence & fonts

[Christopher Fynn]

This site <http://www.theleagueofmoveabletype.com/> distributes fonts 
under the Creative Commons Attribution Share Alike Licence
<http://creativecommons.org/licenses/by-sa/3.0/>
Which allows copying, distribution and attributed derivative works under 
the same, similar or a compatible license.

Is this an acceptable license for the Open Font Library?

The terms seem effectively similar to those of SIL's Open Font License.

- Chris