How was Mark Zuckerberg's European vacation? Totally awesome ! He met a lot of people who are using Facebook to talk to their cousins in Spanish, protest TV crews, and bring back a discontinued candy bar. If that's not making the world a better place, what is? Zuckerberg doesn't mention his major faux pas: Bringing up Facebook users' staging of protests against left-wing guerrillas in Colombia, an achievement he cited in his infamous SXSW keynote interview. As Eric Eldon recently pointed out on VentureBeat, Colombia has right-wing guerrillas, too, with close ties to the U.S.-backed government. They're not as popular in Germany as they are in the U.S. Nor, for that matter is Facebook.