Ever wonder how IPetitions supports itself ? - from their "privacy policy"
Ad Services: In addition, some user information is collected by third-party ad services. Users always have a choice of whether to supply this information and in no case is the information collected without their knowledge.
iPetitions does not maintain any control over the information supplied to these ad services and this information will be used in accordance with the privacy policies of these outside services. (!!!!! IF any !!!)
iPetitions uses these services in order to allow us to keep supplying free and subsidized petition services. "