A project from Esto­nia, a “blog of post­cards for world peace”:http://postcardworldpeace.blogspot.com. From the site:
bq. The idea is sim­ple: Send us a post­card from your country/city (or any post­card you want) writ­ing in the back­side a mes­sage of peace to the World. All the post­cards will be uploaded in the blog, and there will be a record of how many post­cards per coun­try we receive (includ­ing a map show­ing the coverage).