Donation with Paypal is no longer possible. Paypal has "restricted" my account and is going to remove it. Reason: this blog. I tried to get response from Paypal, but they have not yet responded. update: They have now also removed their web form (for me, i presume).
I got response for my email to email@example.com. They just answered with a text module enumerating everything imaginable related to copyright infringement.I don't know whether it's for an emulator in general or whether they think the emulated Multiface is an illegal cracking device or the Multiface emulation or whatever … they don't answer my request.