All search engines consist of three main parts: a robot that gathers information as it crawls the World Wide Web, a database that stores information that the robot gathers, and a search tool that enables users to find information.
Echoing concerns that grew with the World Wide Web itself a decade earlier, the rise of social media has stoked fears of 'social displacement' -- the alienation of people from friends and family in favor of Facebook and Twitter. ...
Science Daily. Thu, 15 Feb 2018 12:50:11 EST.