[quote name='the_punisher']Giving them $.01 costs them money, gave them $1.17[/QUOTE]
No, giving one cent means PayPal gets 1 cent, devs get nothing. The fee structure is 30 cents + 2.9% of the gross payment. i.e. if you donate $1, PayPal gets 33 cents, devs get 67 cents.
"We can only assume that it was related to our publicizing that the most common price point chosen was $0.01 and raising people’s awareness to the fact that we don’t see any money for purchases of $0.30 and under." -- 2D Boy, creators of World of Goo SOURCE
I believe a donation to charity is different from a donation to a company or person.
remember if you're gonna donate under 32 cent, donate 1 cent at most because ebay will get all of it and the developer gets nothing. So a 25 cent donation would be a waste.