CHANTILLY / AP Airline pilots and air traffic controllers are on schedule to switch to text communications at most of the nation’s busiest airports by the end of the year, a milestone that holds the potential to reduce delays, prevent errors and save billions of dollars in fuel cost, says the Federal Aviation Administration. Controllers and pilots will still …

  Relaxnews Twitter has released a new feature that allows all Twitter users to create their own “Moments,” made up of collections of Tweets connected by common subject matter. The feature was first introduced to the social platform in October 2015, originally curated solely by Twitter employees and certain publishing partners, but has been slowly opening up to the public. …

  San Francisco / AP Facebook launched on Monday a “Marketplace” trading platform that lets users of the vast social network buy and sell goods with each other in a mighty challenge to the likes of eBay and Craigslist. The new feature puts Facebook — with a global base of 1.7 billion users — squarely in competition with local online …