Internettet har stor samfundsmæssig betydning, blandt andet på områder som international vidensdeling, kommunikation, handel, mediebranchen og sociale netværk.{{efn|Citat: "...In a series of studies, Lee and colleagues found that greater usage of Facebook predicted lower satisfaction in romantic relationships but not in friendships...Jonah Berger of the Wharton School at the University of Pennsylvania and colleagues analyzed more than 21,000 everyday conversations on- and offline. They found that online posts and texts provide people the opportunity to take pauses in conversations, and thus more carefully craft what they say. As a result, those conversations tend to be more interesting than conversations face-to-face or over the phone..."<ref>[http://www.sciencedaily.com/releases/2013/01/130119185027.htm Society for Personality and Social Psychology (2013, January 19). From bullying to relationships: Mapping our online communications. ScienceDaily]</ref>}}
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