Respuesta :
Answer:
The correct option is D (BrightKite)
Explanation:
Brightkite was an area based informal communication site. Clients could "check in" at spots by utilizing content informing or one of the portable applications and they could see who is close-by and who has been there previously.
The administration was made in 2007 by Brady Becker, Martin May, and Alan Seideman who recently established the SMS warning administration Loopnote. In April 2009 Brightkite was obtained by portable interpersonal organization Limbo.