donating to FB

With the sale going on and the exciting announcements of new plus features I was wondering (not for the first time) if there's a way to donate to FB. I am truely grateful for all the amazing content you provide and appreciate your philosophy and ethics a lot. I find your prices very affordable (especially compared to other online fitness companies) and also love that you never stopped creating completely free content. So with all that in mind I would love to be able to pay a few dollars extra everytime I buy a program or fill my fb wallet. Are there more people here that feel the same? Would love to hear if the fb Team is considering a donation option.