Sometimes the worst ideas are tried just to show how bad they are. Like the Pontiac Aztek, or Sylvester Stallone in one more action flick. Here’s a really bad one: myfrienemies.com. It describes itself as a site that “allows you to connect with people who pretend to like the same people as you”—and if you use the site, you’ll meet the other sixteen people who also pretend to like it. Palestinians and the LGBT community: frienemies for life. The only thing they have in common is a hatred for Israel: a country where gays and Arabs serve in the...