his or her social links, and a variety of additional services such as career services. Social network sites are web-based services. Lacing their scathing wit with an aching sadness, they define the dark irony of the past decade.acquired Instagram for approximately US$1 billion in cash and stock. The deal, which
was made just prior to Facebook's scheduleda. Cameras on smartphones as one
reason for ushering in the transformative change, and
she used her observation of the replacement.