I added TDWYT to the Flattr catalogue. Donations will go into the FSFE account.
https://flattr.com/thing/1829406
I've also migrated the TDWYT website from Webgen (ruby, unmaintained) to Pelican (Python). It's not quite finished, but you can see where I've added a flattr button in the site footer in the screenshot attached.
At the inception of the campaign last year, Matthias and I discussed using Flattr, and concluded we shouldn't. I've reconsidered this however, as it's possible to add it discreetly as I have done, because campaign costs are adding up, and because we're now anticipating a broader audience than we originally intended (the postcards will be in generic locations, not just universities). I wanted to change the button colours to be less harsh, but this is a pain to do as it's iframe based and therefore ignores normal CSS rules.
Views, feedback, questions etc. welcome as ever :)
Sam.