Tech updates from around the web

15 Useful Commands Every Raspberry Pi User Should Know

[The Next Web] Twitter increases its focus on social TV after buying analytics firms Mesagraph and SecondSync

How To Spend And Store Bitcoins Safely, Easily, and for Free

[The Next Web] Microsoft’s Bing expands Snapshot feature to surface doctors, dentists, lawyers, and real estate listings

Chromecast Vs Apple TV Vs Roku: Which Media Streamer Suits You?

[The Next Web] Rdio gets Chromecast support to let you stream music directly to your TV

[The Next Web] Google+ and LinkedIn drive few, but more engaged social referrals compared to Twitter, Facebook, and Pinterest

7 April Fool’s Day Pranks To Play On Your Friends’ PC

[The Next Web] Jelly for iOS now lets you ask and answer questions with a location

Transfer Files Quickly Across Your Devices Using Feem

[The Next Web] Frontback revamps its profile pages so you can everyone’s followers and following lists