Users of Facebook can "like" status updates, comments, photos, and links posted by their Facebook friends and other users, as well as adverts, by clicking a link at the bottom of the post or content. This makes the content appears in their friends' News feeds. Facebook says "Liking" is intended to "Give positive feed [..]

 A computer file format that compresses audio files by a factor of 12 from a .wav file.  

 A touch screen keyboarding technique that lets users swipe or scroll through content with two fingers for faster speed.    

 A more advanced version of the traditional UPC barcode designed to work with common camera phones (representing 80% of new phones sold in the US). With a 2D barcode application on the phone, a user can “scan” a barcode and link to a specific mobile website, save an event to the phones calendar, dial customer service, and more.  

 2G (or 2-G) is short for second-generation wireless telephone technology. Second generation 2G cellular telecom networks were commercially launched on the GSM standard in Finland by Radiolinja (now part of Elisa Oyj) in 1991.[1] Three primary benefits of 2G networks over their predecessors were that phone conversations were digitally encrypted; 2 [..]

 The process of a server sending a browser the location of a requested ad, rather than sending the ad itself. Ad servers use 302 redirects to allow them to track activities such as ad requests or ad clicks.  

 404 error is a common website error message that indicates a webpage cannot be found. It may be produced when a user clicks an outdated (or "broken") link or when a URL is typed incorrectly in a Web browser's address field. Some websites display custom 404 error pages, which may look similar to other pages on the site. Other websit [..]

 Forth generation data networking. Also a marketing term used by Sprint for WiMax, T-Mobile for HSPA+, and AT&T for HSPA+. Think of this as super-fast broadband Internet (cable/fiber). (See HSPA, HSPA+, LTE)  

 802.11a is a Wi-Fi standard developed by the IEEE for transmitting data over a wireless network.   

 Displays the previous page and next page of content (applies to black & white e-readers).