free as in beer (was Re: Clean Sheet?)

[Mark Shuttleworth]

> Why this could be possibly be necessary if Canonical doesn't want to use
> those translation in software with non-free licences? This paragraph is
> suspect to anyone working with free software.

There are many pieces of software that are available under a dual 
licence - for example MySQL, Qt and others are both GPL and commercial. 
Without this clause, the translation is useless for upstreams of such 
projects since were unable to provide them with a translation they can 
use freely.

The main thing to look out for is that the licence of the software you 
are translating meets your definition of free. Then your translations 
are automatically available under that free licence, which cannot be undone.