Targeted advertising is a form of online advertising that is directed towards audiences with certain traits, based on the product or person the   advertiser is promoting.   [The Digital Classroom Resource].  

The use of electronic communication to bully a person, typically by sending messages of an intimidating or threatening nature. [The Digital Classroom Resource].  

A special alpha-numeric key provided with software to authenticate legitimate purchases of the software and allow its installation on a computer system.     [The Digital Classroom Resource].