hallmark
hallmark
Americans send the most Valentine's cards.
There are many different companies that make all kinds of fathers day greeting cards. The company that sells the most cards is by far the company HallMark.
Men
Yes
The most famous and respectable website that sells happy holiday cards is Hallmark. In addition to their online collection the company has many stores that sell holiday cards.
baseball
Toyota is the car company that sells the most within the United States. However, GM is a car company that sells the second most in the US.
Valentine's Day
Glossy cards are business cards printed on a higher quality paper than most business cards are printed on. Gotprint sells them, but I don't think you can get glossy cards everywhere.
everyone together (not sure how many)
Anyone can receive a valentine!