Here is a wonderful postcard application that I just found about and joined. Thanks to Stephanie M. for forwarding this one.

Postcrossing

Basically you register with Postcrossing and then send a postcard to an address they supply.  When the card is received Postcrossing sends your address to someone else in the world and that person sends you a postcard.  So far I have sent seven cards, two have been received and I have gotten none back yet.  For more details go to the link above or search for PostCrossing.com.  I am very excited about this good idea.

Also while on the subject of postcards recently Scott V. sent me a link to an LA Times story about the creation of the postcard fad.  Postcards were the Twitter or Facebook of their day.