postcrossing is a place where people get to send postcards all around the world. Postcrossing was started in 2004 in Portugal by Paulo Magalhaes. the steps of postcrossing is 1. getting a postcard id and writing (example US-0000). 2. posting the postcard and waiting for the postcard to get registered. 3. receiving a postcard and registering the postcard id and the process repeats! there is over 800,000 people registered to postcrossing!
the fun parts of postcrossing that I Like is the postcrossing forum, there is so much to do in the postcrossing forum like trading postage stamps/ postcards and activities like US to US round robin. i also have sent nearly 300 postcards in postcrossing!
the link to postcrossing: https://www.postcrossing.com
sam's web page 