Traveling through Cuba, you often feel as if you’re hanging out with people still living in the 20th century. But there’s clearly a huge appetite for the Internet. People — young and old, poor and less poor — go to great lengths to get online. The capacity is meager, and surfing freely can be a challenge — but, clearly, the hunger for the Internet will not be stymied. At night, many public zones with Wi-Fi become community living rooms. As few can afford to be online at home, certain corners — where Wi-Fi is available — glow with the screens of smartphones. Government control of Internet access seems not very determined…except for the websites of anti-Castro forces in Florida.