he didnt donated the proceeds to charity, he donated profits from sales, he somehow managed to retain copyright to his music funnily enough so that royalties were paid to him.
I suppose cynically it could also be viewed as milking the system after all he intended hi single to be launched to great fanafare about it being a charity single but didnt bother mentioning that he still retained copyright, and money from the royalties was going to ........ Michael Jackson
http://www.foxnews.com/story/0,2933,199423,00.html