Chargebacks cost us time and money to resolve. I've had to deal with $105 in chargebacks over the last 3 days. Please make sure that you are authorized to use the PayPal account from which you send donations. We do appreciate the donations, but chargebacks are a liability - not an asset.
Our procedure for dealing with chargebacks is as follows:
1st time: You will be removed from the donor group - regardless of how much was charged back and how much you have donated to date. We will also accept no further donations from the account.
2nd time: You will be permanently banned for abuse of the donation system.