Saint Valentine's Day Postcard

Since the 19th century, handwritten notes have given way to mass-produced greeting cards. The mid-19th century Valentine's Day trade was a harbinger of further commercialized holidays in the United States to follow.
In the second half of the 20th century, the practice of exchanging cards was extended to all manner of gifts in the United States. Such gifts typically include roses and chocolates packed in a red satin, heart-shaped box. In the 1980s, the diamond industry began to promote Valentine's Day as an occasion for giving jewelry.
The U.S. Greeting Card Association estimates that approximately 190 million valentines are sent each year in the US. Half of those valentines are given to family members other than husband or wife, usually to children. When you include the valentine-exchange cards made in school activities the figure goes up to 1 billion, and teachers become the people receiving the most valentines. In some North American elementary schools, children decorate classrooms, exchange cards, and are given sweets. The greeting cards of these students sometimes mention what they appreciate about each other.
The rise of Internet popularity at the turn of the millennium is creating new traditions. Millions of people use, every year, digital means of creating and sending Valentine's Day greeting messages such as e-cards, love coupons or printable greeting cards. An estimated 15 million e-valentines were sent in 2010.