how to donate to LilyPond project/developers?

[Federico Bruni]

Hi,

where should I point people interested in donating to the LilyPond
project (or to each developer)?
IIRC, there is a kind of LilyPond foundation for that. It has been
discussed before but I can't find complete information in the archives:

http://lists.gnu.org/archive/html/lilypond-user/2010-06/msg00348.html 
http://lists.gnu.org/archive/html/lilypond-user/2010-10/msg00410.html 


In the website there's no mention to any donation option.
There's any progress on this matter?

I'm asking this question because I'd like to add LilyPond to this list
of free software projects:

http://wiki.fsfe.org/DonateToFreeSoftwareProjects

where a "donate link" is needed.

Cheers,
Federico