Graculus (3653645) writes with news that, as threatened, cab drivers in several European cities mounted a protest against Uber today. From the article: "Uber Technologies Inc., the car-sharing service that's rankling cabbies across the U.S., is fighting its biggest protest yet from European drivers who say the smartphone application threatens their livelihoods. Traffic snarled in parts of Madrid and Paris today, with a total of more than 30,000 taxi and limo drivers from London to Berlin blocking tourist centers and shopping districts. They are asking regulators to apply tougher rules on San Francisco-based Uber, whose software allows customers to order a ride from drivers who don't need licenses that can cost 200,000 euros ($270,000) apiece." The Guardian covered the London protest, which ended peacefully 3 p.m..