Facebook roundup: share price up, Firefox gets social, Radian6 staff cut and more

Facebook stock sees post-earnings surge – Following the company’s third quarter earnings call on Tuesday, Facebook experienced its largest single-day leap in stock price since the company went public in May of this year. Shares went as high as $24 on Wednesday after the company reported better Q3 numbers than expected. The stock closed at $21.94 this week, up 14 percent for the week. Shares had been mostly below $20 since Oct. 10. The stock is expected to continue to fluctuate, especially with major lock-ups ending next month and putting more than 1.2 billion in employee restricted stock units on the market.

COO Sheryl Sandberg, VP of Marketing David Fischer, VP of Engineering Mike Schroepfer, CFO David Ebersman, Chief Accounting Officer David Spillane and General Counsel Ted Ullyot all had RSUs vest this week, however, Facebook will withhold about 45 percent of those shares and pay the tax on them, preventing executives from having to pay the taxes themselves while helping to protect the stock price.

Facebook, Mozilla team up to make Firefox more social – Mozilla released Facebook Messenger for Firefox this week as part of the beta version of its new Social API. The company worked with Facebook to create a Firefox sidebar that allows users to share content and check Facebook notifications without leaving the site they’re on. The Social API enables other social networking services to integrate with the browser and create more social experiences for users.

Salesforce reportedly laying off Radian6 staff – Cloud account management giant Salesforce is cutting staff from its social media listening service Radian6, according to TechVibes. A Salesforce rep confirmed that the company was undergoing some restructuring following both Radian6’s May 2011 acquisition and the acquisition of Buddy Media this past June.

Eventbrite study shows Facebook generates the most revenue for planners – Facebook drives more event ticket sales than other social networks, according to a new study by virtual ticket sender Eventbrite. Eventbrite found that each event posted on Facebook on average gives the organizer an additional $4.15 in revenue. By comparison, Twitter links generate an average $1.85 additional revenue per event, and LinkedIn generates only $0.92 per event.