« En toute chose, l'on ne reçoit qu'en raison de ce que l'on donne »
Sending a greeting card is one of these simple gestures which reminds your close relations that you miss them. On a card, words take a stronger power because it can be preserved. Lets keep in mind Balzac's words.

Some advice of use :

To drop a line . . . on a card
A card is a magical and powerfull picture, perfectly matched with your text . You cannot get rid of a card by clicking : You keep it preciously, you post it on your wall, you show it. Then, you put it on your side, because you don't dare to throw it away. The proof is that the brilliant second life of our products become expressions of way of lifes and writings...

The card, by its writing, is a wonderfull way of :
Expressing feelings that you couldn't express in person.
Preserving expressions of important moments of your life.
Comunicating easier between generations.
Bringing comfort to your correspondent in difficult moments.
Sharing moments of joy with the others.
Showing the importance you give to the person you send thoughts to.