US appeals panel agrees government can demand Twitter account info in WikiLeaks probe:
A federal appeals court ruled Friday that prosecutors can demand Twitter account information of certain users in their criminal probe into the disclosure of classified documents on WikiLeaks. Ref. Source 7
Hackers gain access to Twitter users' info
Twitter confirmed that it had become the latest victim in a number of high-profile cyber-attacks against media companies, saying that hackers may have gained access to information on 250,000 of its more than 200 million active users. Ref. Source 7
The case for letting terrorists use Twitter
Somali al Qaida affiliate al-Shabab woke up one January morning to discover that its popular English-language Twitter account - @HSMPress - had been suspended, apparently because it had issued a direct, specific threat of violence in breach of Twitter's terms of service. Ref. Source 5
Computer program uses Twitter to 'map mood of nation':
The researchers say the computer program can scan up to 2,000 tweets a second med Emotive, it works by accessing the emotional content of postings on the social networking site. Ref. Source 8