1. History Valentine's Day
History.com Valentine's Day
The History Channel's website offers information about the history and Valentine's Day trivia.

2. Valentine e-cards
If you wish to send your Valentine's Day greeting via email then care2.com has a nice selection of free e-cards. This is one of my favorite e-card sites. They have messages geared toward friends, kids, family, humor and more. They even have anti-Valentine's Day messages.
Indiana University has a great selection of Victorian e-cards for those of you who have a traditional, romantic streak.

3. Victorian Valentine Card Collection
Indian University has a number of online exhibits including one dedicated to Victorian Valentines.

4. Valentine's Day Facts and Statistics
If you've got a Joe Friday outlook on the holiday and are looking for "just the facts," then you'll want to visit the U.S. Census Bureau Valentine's facts page.

5. How Valentine's Day Works
Just in case you were a little confused about how Valentine's Day really works, Howstuffworks.com covers the history, symbols, tradition of the day.

6. Valentine's Day Web page Background Sets
If you want to dress up your personal website for Valentine's Day here are some great matching sets. Click on the theme to see the complete set, which includes a background, heading and a full set of customized buttons.

7. Printable Cards, Gift Wrap and Coupons
Hp has some great printable projects for Valentine's Day.
Valentine Cards set 1
Valentine Photo Card
Kids' Valentine Cards
Kids' Valentine Projects
Valentines gift wrap set 1
Valentine Gift Wrap Set 2
Valentine Gift Boxes
Printable Valentine Iron-ons
Printable Valentine CD/DVD labels
If you forgot to buy a gift you can print out a coupon for a special something, like a back rub, etc.

8. Flower Meanings
In the Victorian era every flower was given a meaning so a suitor could send a message to his beloved with a bouquet. The Flower Society has a comprehensive directory of the meanings of various flowers.

9. Send a Valentine Message to a Member of the Military
If you have a friend or loved one serving in the military you can send them a printed message of up to 255 words. Your message will appear in the February edition of Stars and Stripes.

10. Valentine's For Veterans Program
Brighten the day of a hospitalized veteran by participating in the Valentine's for Veterans program. The Veterans Affairs Website has information about the program including a Facility Locater so you can send your Valentine's to a Veteran's hospital in your local region.
If you live in Canada you can also participate in this program. The Canadian Veterans Affair Website has details about sending Valentines to Canadian Veterans.

11.Mailing a Card? Get a Valentine's Day Postmark
New Hershey's Kiss Love Stamp
USPS List of places that offer Valentine Postmarks
Valintine, VA Postmark
Valentine, Nebraska Postmark
Loveland, Colorado Postmark
Loveland, OH postmark

Mailing in Canada, Canada Post offers info about how to get a special Valentine's Postmark.

12. Valentine Desserts
The Joy of Baking website offers a nice selection of Valentine Day dessert recipes.