Yeah maybe so. I don't know much about BitCoins or Flattr. Well whatever the
payment method I think there should still be a donation button on the
download page.
I think asking for a donation for the download would be a good thing and a
relatively easy way to get some cash in. The reason I suggested €2/$2/£2
is because I think almost everyone can afford that, and its a reasonable
amount to contribute just for the download.
Probably PayPal would be the best option; the easier it is to donate, the
more people will do it. Do PayPal have a reduced rate for
non-profit/community organisations? Also if the volume of donations is large
maybe Trisquel could negotiate?