P1

Instagram - 

Founded - October 6th, 2010

Purpose - is a photo sharing app , known for its square image format ,it is a virtual lack of a website and the filters it provides

How does the sight make money - advertising 

One example of controversy - Instagram has claimed the rights to sell people’s photo

Facebook - 

Founded - January the 4th 2004

Purpose - Facebook is to make the world more open and connected. Facebook's latest mission statement is that people use Facebook to stay connected with friends and family, discover what's going on in the world and share and express what matters to them.

How does it make money - advertising 

Controversy - ex facebook moderator sues Facebook over exposure to disturbing images 

Twitter -

Founded - march 21, 2006

Purpose - Twitter is a free social networking microblogging service that allows registered members to broadcast short posts called tweets. Twitter members can broadcast tweets and follow other users' tweets by using multiple platforms and devices.

How does it make money - sellers promoted tweets to marketers 

Controversy - twitter finds software privacy bug is affecting private messages