Since I don't see a forum for postcard exchanges I'll put this here. A great way to exchange stamps might be via a site I recently joined. www.postcrossing.com/
There you send and get cards randomly among over 100,000 other members and you can choose to do private exchanges with members if you want.
A great way to make efriends and learn about the world and collet both post cards and stamps.
If you join you'll find me as the only member in the country list under Northern Mariana Islands.