I use ivouch.com for reviews, as well as the reviews built into zen-cart. I was just browsing their website, and they now have an api code, which is supposed to automatically generate an e-mail requesting the customer to leave a review. I can tell that the code will have to be modified to work with zen-cart. I'm wondering if anyone would like to give me a few pointers on what should be changed, and where the code should be implemented. The code can be found at: http://www.ivouch.com/docs/api-private.htm

Code:
    {
    "Auth" : {
      "Email" : "(email address of iVouch user to authenticate)",
      "Pw" : "(password address of iVouch user to authenticate)"
      -OR-
      "APIKey" : "(Private API key generated by iVouch user to authenticate)"
      },
    "GetReviewRequest" : {
      "TopicID" : "(Topic ID for which to request review)",
      "Ref" : "(Any reference ID you wish to assign to this request (such as your Invoice ID or Customer ID), up to 255 characters [optional]",
      "VerifiedCustomer" : "(If true, you want iVouch to mark this review as 'Verified'. Default is true. [optional])",
      "FirstName" : "(First name of person assigning review request to)",
      "LastName" : "(Last name of person assigning review request to)",
      "Email" : "(Email of person assigning review request to])",
      "EmailByIV" : "(Set to true to indicate this request should be emailed by iVouch)",
      "EmailByIVSubj" : "(Subject of email to send)",
      "EmailByIVMsg" : "(Text of email to send)",
      "EmailByIVDaysFirst" : "(Number of days to delay sending the first email invitation [optional])",
      "EmailByIVDaysReminder" : "(Number of days after first invitation to send a reminder [optional])"
      }
    }