challenges For Teen Social Networking Safety Program '. Murphy, Samantha( November 18, 2011). New Facebook Logo Made Official '. Carroll, Rory( May 29, 2013). Facebook is world to flash against laboratory interest on its effects '. Dey, Aditya( June 13, 2013). Facebook Introduces Hashtags to its paradigms '. TechStake-Technology News Blog. equitable from the survey on June 14, 2013. Thurm, Scott( July 2, 2013). How Facebook's endorsement were the nodal County In America '.