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Despite strong Q4 sales increase, stock plunges after Twitter acknowledges sliding user growth and engagement numbers
A group styled as the Syrian Electronic Army claimed credit
Behold the biggest topics on Facebook, Google, Twitter, and Yahoo in 2013 -- you have no one to blame but yourself
Meeting with execs from tech companies such as Apple, Google, and Yahoo follows waves of disclosures related to government surveillance
AOL, Facebook, Twitter, Yahoo, and LinkedIn are also among the tech companies wanting the U.S. to lead the reform of surveillance laws and practices
Some new features and high-profile hires demonstrate a growing interest in keeping users informed about current events
Topsy analyzes social data across the Web, including all of Twitter's stream
The company calls on others to embrace 'perfect forward secrecy'
The tech industry talks big about fixing societal ills, but few are engaging -- much less supporting -- the outside world
On eve of its IPO, it's easy to forget how far Twitter has come -- and how much it's changed our dialog