Pew Research CenterJuly 15, 2011

Twitter, launched five years ago, delivers 350 billion tweets a day

L.A. Times

Pew Research CenterJune 1, 2011

Pew report: About 13% of adults online in the U.S. use Twitter

L.A. Times

Pew Research CenterDecember 16, 2010

Online generation gap is narrowing, Pew report finds

L.A. Times

Pew Research CenterFebruary 18, 2009

Twitter’s charms sort of grow on you

L.A. Times