No matter, what the cause, as long as it a legitimate cause, we might get behind it. Dropping a few satoshi here and there, will not break your bank.

Have you even seen, what are being done to these African rhino's? Imagine someone cuts off your nose, while you still alive?
Have you touched a rhino? Have you seen a dead carcass, where the horn has been cut off?
Well I have, and it's not something I ever want to experience again.
Look at my message, ...I am saying, lets do something good, and try to undo some of the harm that was done. It does not just mean, that you have to support the
rhino cause, you can list any other cause, for which you feel, some
BTC might make a difference.
I would one day, have my kids touch a rhino or animals like these, who are being wiped out, at an alarming rate.

Franky1 - What would a African ranger do with your Yen Pounds etc? Convert it to Rand and pay exchange fees? They convert it to Rand, because it's the currency of that country and it practical, to pay people for their services, in the fiat currency they use.