In 2011, Twitter was worth less than $ 8 billion,
and just 7 months before was worth 3.7 billion dollars.

Revenues expected to climb to one billion dollars, between the end of 2013, and 2014.

BlackRock bids from $ 80 million to purchase securities by employees.

Twitter was launched in 2006, and has doubled the number of its members in 2010,
reaching a total of 200 million people.

Consider that Zynga capitalization is approximately $ 1.9 billion,
while the capitalization of Groupon, is about $ 3.4 billion.