Twitter to Sell Users' Old Tweets to Marketers

"Starting next month, DataSift will launch a cloud-based service that will allow other companies to analyze these two-plus years of tweets to learn more about their customers."

Could Twitter Predict the Stock Market?

"Usage of social media like Twitter has exploded in recent years, giving analysts a real-time reflection of popular sentiment. As a result, MarketPsych serves up reams of data to hedge funds (which swear Peterson to secrecy) and research firms like Titan Trading Analytics. Peterson even plans to roll out a hedge fund of his own."

Twitter is Harder to Resist Than Cigarettes and Alcohol, Study Finds

"Tweeting or checking emails may be harder to resist than cigarettes and alcohol, according to researchers who tried to measure how well people could resist their desires."

Political Ads Go Digital and Social

"Republican presidential candidates are turning to the Internet, spending million of dollars on political ads with Google, Facebook and Twitter, analysts say."

How Colleges Use, Misuse Social Media to Reach Students

"For universities competing to attract top students, it's no longer enough to have a glossy brochure and a sleek website. Schools like Johns Hopkins are reaching out to engage with applicants on Facebook and Twitter."

Decoding Our Chatter

"Want to monitor an earthquake, track political activity or predict the ups and downs of the stock market? Researchers have found a bonanza of real-time data in the torrential flow of Twitter feeds."

Twitter Now Has 100 Million Active Users

"More than 100 million users are 'active' and log onto Twitter daily, or about half its registered members, and a growing number are doing so from a plethora of mobile devices, Chief Executive Dick Costolo told reporters on Thursday."

Twitter Gears Up Auto-Ads for Big Clients: Sources

"Twitter is courting big time advertisers and will soon allow them to tailor, automate and publish ads in bulk directly onto the Internet microblogging service, according to two people with knowledge of the matter."

Twitter Hits 200 Million Tweets a Day

"In June 2010, Twitter users sent about 65 million tweets per day. One year later, 200 million tweets are sent per day. According to the Twitter blog, it would take more than 31 years to read all 200 million tweets."

Speaking Up in Class, Silently, via Social Media

"A small but growing cadre of educators is trying to exploit Twitter-like technology to enhance classroom discussion and get students to shed inhibitions about voicing opinions."

Twitter CEO: 80% of Advertisers Renew

"More than 80 percent of the companies that advertise on Twitter renew their marketing efforts on the microblogging service, the company's chief executive said on Wednesday."

Most Twitter Users Access Service From Their Phones, Study Says

"Among U.S. adults who go online, 13% use Twitter -- and more than half (54%) of these people access the popular social media service with their mobile phone, according to new research from the Pew Internet and American Life Project."

To Profs, YouTube Tops Twitter

"Think Twitter is a great professional and teaching tool for professors? You're not alone. But according to a new study, you're in a very slim minority."

Republicans Sharpening Online Tools for 2012

"Republicans are better prepared to compete on Facebook, Twitter and other online tools in this presidential contest than they were in 2008."

Survey: Frequent Twitter Users Have Shorter Relationships

"Is someone you know tweeting a great deal? According to a recent survey, he or she might be prone to having shorter relationships."

Nearly 50% of Tweets Consumed are From Tiny Fraction of Twitter Users

"A mere 20,000 Twitter users steal almost half of the spotlight on Twitter, which now ropes in a billion tweets every week."

Study: Facebook “Likes” More Profitable Than Tweets

Eventbrite "announced Wednesday that an average tweet about an event drove 80 cents in ticket sales during the past six months, whereas an average Facebook Like drove $1.34."

Internet Users Turned to Social Networks in Elections, Survey Finds

"One in five adults who use the Internet, including a growing number of older, conservative Republicans, turned to social networks during last year’s elections, according to study published Thursday."

The Science of Making Decisions

"The Twitterization of our culture has revolutionized our lives, but with an unintended consequence—our overloaded brains freeze when we have to make decisions."

‘Embedded Librarian’ on Twitter Served as Information Concierge for Class

"What if a reference librarian was assigned to a college course, to be on hand to suggest books, online links, or other resources based on class discussion? A media-studies course at Baylor University tried the idea last semester, with an 'embedded librarian' following the class discussion via Twitter."