[Trisquel-users] Re : Is Paypal compatible with software freedom?

[lcerf]

My post was about showing, that gnutaler cannot work as a tool against  
profiling.

It can.  It uses what is known (for 34 years) as "blind signature" to  
guarantee the anonymity of the buyer:  
https://en.wikipedia.org/wiki/Blind_signature

See https://grothoff.org/christian/taler2016space.pdf to read more about GNU  
Taler.