Paul McCartneydons his Santa hat to enable fans to send free E-cards with his "Wonderful Christmastime" as the soundtrack.
PaulMcCartneyHoliday.com offers an easy-to-work interface for personalized musical holiday messages that can be conveyed to friends and family via Facebook or WhatsApp. It's fun and I'm pretty sure you're not giving your personal information to the Chinese when you do it.