We have just added a new problem category for flagging a deal: 'unconfirmed'. It should be used by admins/members for future starting deals where the submitter claims to have confirmed the deal but doesn't provide any evidence, e.g. in a form of a screenshot or a picture.
This doesn't mean we will start approving all unconfirmed deals. This is for those border line cases where we know the submitter and trust them, but just cannot find any information online to back the promotion in the deal.