Modern Internet connectivity meets old-school snail mail charm in Shanghai resident Paulo Magalhães’s popular website Postcrossing.com, which allows users to send and receive postcards from friendly strangers all around the globe. Founded in July 2005, the site grew wildly popular as fans passed the news by word-of-mouth and now boasts 50,000 users in 182 countries. On the occasion of its third anniversary, Shanghaiist caught up with the Portuguese innovator just as Postcrossing hit its biggest......