By | January 17 2013 2:30 PM

It’s been a big week for Facebook (Nasdaq: FB), the social media giant that skipped out on the Consumer Electronics Show last week to focus on technology other than 3-D printers or smart TVs. The Menlo Park, Calif.-based social networking company introduced a new feature for its iPhone app on Wednesday that allows users to make free calls over Wi-Fi and cellular data plans.