US stocks rose for a second day after an encouraging report on retail sales suggested that Americans are finally feeling confident enough to spend more.

Twitter has beaten Wall Street forecasts after it posted a big jump in quarterly revenues.

Twitter’s chief executive has taken personal responsibility for the social network’s problems in dealing with abuse reported by users.

After the execution of James Foley, the old framework in which reporters are generally tolerated may be coming to an end, writes Jack Shafer.

Scotland Yard has warned internet users they could be arrested under terrorism legislation if they viewed or shared the video of James Foley’s murder, as Twitter and YouTube attempted to remove all trace of the footage from the web.

A campaign has been launched on Twitter urging people not to share the video purporting to show the murder of James Foley.

Stronger-than-expected financial results has pushed Twitter’s stock sharply higher after the short messaging service said its revenue more than doubled in the second quarter.

Twitter chief operating officer Ali Rowghani has resigned from his post.

Twitter’s stock has sunk to an all-time low after a post-initial public offering lock-up period preventing employees and early investors from selling expired.

Twitter’s slowing user growth pushed the stock to the lowest since last year’s market debut.

As Twitter looks to broaden its appeal beyond its 241m users, it is introducing a redesign of profile pages that includes bigger photos, more user controls, and a distinct resemblance to Facebook.

Twitter reported its slowest pace of user growth in recent company history, dimming hopes that the social media phenomenon can sustain its torrid pace of expansion and wiping out nearly a fifth of the firm’s value in after-hours trading.

Twitter has backtracked on a change it made to its “block” function after it faced a user revolt.

Twitter soared as much as 92% in its first day of trading yesterday on the New York Stock Exchange as investors snapped up shares in the popular microblogging site in a frenzy that recalled the days of the dot-com bubble.

Among Twitter’s highest- paid executives, Christopher Fry’s name stands out.

Twitter, a privately-held company built on blurbs, has finally laid itself bare in documents that read more like a treatise than a tweet.

Brian Womack reports on the fallout from AP’s feed being hacked, sending markets briefly tumbling.

SAUDI billionaire Prince Alwaleed bin Talal, an investor in some of the world’s top companies, has bought a stake in Twitter for $300 million (€226m), gaining another foothold in the global media industry.

Twitter has bought TweetDeck, a London-based start-up that helps people read, write and organise the short messages posted on the online network.

When US President Barack Obama arrives at Facebook headquarters this week, he will be the first sitting head of state to visit the brick-and-mortar home of the social media powerhouse.

Twitter co-founder Evan Williams is stepping down as the short-messaging service's chief executive officer.