This is protection to the streamer, Floe - http://twitch.tv/floe, for the donation being received. By clicking on Pay with Paypal button and completing the transaction you hereby certify you are the rightful owner of the funds being donated in this transaction and cannot be withdrawn / charged back. Donations are unrequired, non-refundable, and non-acquisitional (you aren't buying anything) so make sure you want to donate with love AND have the funds!