'Tis the Season for Urgent Email Subject Lines

We're in that magical time of the Holiday Season when "early bird discount" emails have given way to "there's still time!" messages. And nothing seems to say Christmas like Free Shipping offers. Today I offer you a sampling of email subject lines from leading merchants. Do we detect any common themes?

1-Day Savings + Gift Cards, Shipped FREE (LL Bean)
It's Not Too Late To Order Holiday Gifts! (Liberty Orchards)
FREE Delivery – Order TODAY! (Harry & David)
It's Not Too Late to Send the Perfect Holiday Gift (White Flower Farm)
LAST DAY for FREE DELIVERY! (Wolferman's Gourmet Bakery)
Only 8 Days Left To Get It In Time for Christmas (Agri Supply)
Last Chance for Super Saver Shipping (Amazon.com)
FREE SHIPPING IN TIME FOR THE HOLIDAYS (Overstock.com)
Complimentary Shipping for the Holidays (Ruma's Fruit & Basket World)