Maybe you should instead donate any leftover money to CFAR, so as to avoid the donor illusion. Also, that way everyone who doesn't donate gets to feel a warm glow, too!
I'm curious as to what people think about the hypothetical ethics of jkaufman expecting to donate leftover money at the end of the year to AMF, but not announcing the fact and only committing to the matched money. This seems to me like it would be ethically okay but I am interested if anyone thinks otherwise. (In particular, one reason this seems ethical to me, is that it seems to me that the state of having a public commitment to do something importantly differs from the state of not having such a commitment, and differs even more under the outside view. Another reason it seems ethical is that the results are both good and nonselfish, hence subject to less suspicion than usual :).)
Some people have demonstrated how telling a very similar lie, but for any case other than a "good cause," is clearly unethical. I definitely agree with that
As much as I'm reluctant to say it, though... I think "The Ends Justify The Means" comes into play, though. If hypothetical jkafuman didn't mention that he would ALSO donate that same amount if you DIDN'T donate, I wouldn't blame him. (In fact I may thank him, possibly.)
(I'm not advocating purely utilitarian morality - I think the morality is ultimately a balance between "don't mislead people" and "save lives from malaria")
Giving money to effective charities is one of the ways we can have the biggest positive impact in the world. If you've been thinking about giving to GiveWell's top-rated charity, the Against Malaria Foundation, but haven't gotten around to it, perhaps this will help: make a donation of up to $2K and I will match it 100%. I'll match up to $20K this way.
(Any money left over at the end of the year will also go to the AMF. That makes this a donor illusion, in that you're not actually affecting the amount I give them this year.)
I made the same offer on my blog