To be fair, the author noted a similar "sleight of hand" on your part, and duly called you on it. While I may disagree with his assertion that this needs to be the last donation (although he does have that right) I do believe that he has made a specific complaint against your site. Specifically your insistence that it is acceptable for you to use these techniques because you are doing good while you see a problem with such practices from the other side. I think you could have better resolved this issue if you had have have acknowledged your failure, corrected your behavior and moved on. Instead, you chose to defend and indefensible position and have lost a small amount of credibility.