 Johnny Beardmore has a novel way to meet more people. Earlier this year, he loaded up a carry-on bag, left his London home, and embarked on a year-long journey across seven continents with the goal of hand-delivering 50 postcards to their intended recipients. The Wall Street Journal says Beardmore was inspired by a 200-year-old post office tradition in the Galapagos Islands. Sailors on multi-year adventures...