As we approach the holiday season, it’s worrisome that major retailers aren’t doing more to empower their subscribers to extend the reach of their email campaigns. SWYN and FTAF provide free marketing that’s currently going unused, meaning money is being left on the table. The report details which social networks retailers are linking to, looks at how popular sharing interfaces like ShareThis are, examines the wording used in FTAF links, and reveals the prevalence of promoting SMS subscriptions and mobile apps in emails.