• Refund for some Facebook investors

  Morgan Stanley, the lead investment bank in Facebook's troubled initial public offering, will compensate retail investors who overpaid when they bought Facebook's stock in Friday's IPO, according to a source familiar with the matter.

• China's Sina Weibo targeting Japanese advertisers

  One of China's top Twitter-like sites, Sina Weibo, is working to attract Japanese companies to advertise on its platform by helping the firms open and use accounts on the microblogging service.

• Facebook beefs up mobile photo sharing with Camera

  Facebook introduced its own mobile photo app, Camera, on Thursday, bringing richer photo-sharing features to the platform even before the company closes its deal to acquire the popular photo-sharing app Instagram.

• Facebook used as terrorist tool: Expert

  Terrorist groups are using Facebook to recruit loners from Western countries like Australia to their cause and authorities are struggling to stop it, a leading counter-terrorism expert says.

• Facebook to settle class-action suit over Sponsored Stories

  Facebook is to settle a class-action lawsuit in California that accused it of appropriating its users' likenesses for its Sponsored Stories advertising feature, according to a court document filed Tuesday.

• Should I protect my tweets?

  When I signed up for a Twitter account in the summer of 2009 I spent some time thinking about whether or not I should protect my tweets. As a novice Twitter user, I had to decide whether the benefits of protecting my tweets outweighed the drawbacks. Looking back, I do not regret my decision to protect my tweets, and I'll tell you why.

• 10 ways to get more out of LinkedIn

  With more than 80 million users worldwide, LinkedIn has established itself as the premier social networking site for professionals. If you're job searching, looking to broaden your network or hunting for new partnerships, these 10 tips and tricks will propel you toward success.

• Facebook social inbox: What you need to know about messages

  Back in November 2010, Facebook announced plans for a "social inbox" -- a space that would serve as a hub for all communications that people use online or via mobile phones, ranging from text messages and chat messages to e-mail messages, too.

• How to use Twitter like a real pro

  Get more out of Twitter with the following tips and tricks. It’s often considered a must do social networking technology and if you don’t know how to manage Twitter, you may just fail to reap the benefits it provides.

• How to use and get more out of LinkedIn

  LinkedIn is the social networking site for professionals. But how do you best utilise the services on offer? Below are some tips and tricks for helping you get the most out of LinkedIn.

• Study: Facebook relies on good design to retain users

  What is Facebook's secret to keeping the world's largest user base content? Sticking to well-proven software design principles, one study has concluded.

• First Look: Facebook Single Sign-on

  Facebook is getting serious about on-the-go social networking with a suite of new features announced during the Facebook Mobile event on Wednesday.

• Can you trust Facebook Places?

  Facebook, the company many people don't trust to protect their status updates and personal information, is now in the business of collecting location information, thanks to the introduction of its Foursquare/Gowalla killer, Facebook Places.

• Who really runs Facebook?

  Quick: Who's the CEO of Facebook?

• Can Facebook privacy be simple?

  Facebook, according to its CEO, is built around the simple idea that people want to share things with "their friends and the people around them."  

Whitepapers about social networking

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  CISO Guide to Next Generation Threats - Combating Advanced Malware, Zero-Day and Targeted APT Attacks

  Over 95% of businesses unknowingly host compromised endpoints, despite their use of firewalls, intrusion prevention systems (IPS), antivirus and Web gateways.1 Today’s attacks look new and unknown to signature-based tools because the attacks employ advanced malware and zero-day vulnerabilities. To regain the upper hand against next-generation attacks, enterprises must turn to true next-generation protection: signature-less, proactive and real time. Read on.

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  Advanced Malware Exposed - How advanced malware, zero-day and targeted APT attacks are evading today's network defences

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  Rob Clyde Consulting Report: Beyond the Wall: Security in a Post-Perimeter World

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  CSO Security Buyers Guide 2011