Whilst I have signed several petitions that are worthwhile causes I refused to sign one recently as I felt there was a hidden agenda and other implications which were not shared openly with us. I felt that the owner of the petition had their own personal agenda which they were not making clear to us deliberately. I would advise not To just blindly sign anything that appears a moral black-and-white but to be careful what you wish for as the saying goes. If the information is not explain clearly either on change.org or on a parent website then do not sign. This will lead to more transparency and help us make up our own minds. As I say I have signed many petitions which are worthwhile but beware of hidden agendas. As regards change.org themselves there is a web page that appears after you sign Asking if I you would like to spend a considerable sum to petition other persons who may or may not sign it. This is crass and exploitive marketeering and a charitable platform should not be used to make a profit. Reject it immediately. We are trying to help people not line their pockets. Good but be careful