Good New York Times round-up of recent examples and some of the policy issues presented by "drone journalism". Excerpt: The best way to film the destruction wrought by Typhoon Haiyan in Tacloban, the Philippines, said Lewis Whyld, a British photographer, was from the air.But Mr. Whyld did not want to beg for a ride on a military helicopter, taking the space of much-needed aid. So he launched a…