Care 2, which maintains the petition site, abides by the TRUSTe privacy policy. It also states the following:

"PetitionSite: Care2 owns and maintains the nonpartisan PetitionSite.com. Petition and Public Comment signers are required to provide certain personal information such as name, email address and often street address. This information is required to validate the petition / public comment. Care2 uses cookies and a signature database to provide data integrity and ease of use. Your email address, street address, phone number and other specific contact information will not be available to either the petition creator or petition recipient, unless specifically stated during the petition signing process. During the signing process, you may opt to receive certain email newsletters and online memberships, in which case Care2 will send required contact information to those 3rd party providers. However, unless you specifically opt to receive such online offers or send your contact information to 3rd parties during the signing process, Care2 will keep your email address information confidential."

I just went there too. It says they don't give out or sell email addresses. Ihave seen similar websites being used for petitions so it should be ok.
It better be bc I just had that petition sent out to a bunch of people.

is this place legit, I did it but it seemed so strange like they were just gathering e=mail addresses for spaming.