With a new look and additional content, Twitter has relaunched its Twitter For Business Web site. “The how-to content is separated for new or advanced business users, and case studies are organized by size of business and industry,” Marketing Land reports. “And, of course, there’s plenty of information about Twitter’s advertising options and how to get started with them.”  

After about three years on the job, Alma Whitten plans to step down as Google’s first director of privacy, Forbes reports. “Whitten is expected to be replaced by Lawrence You, an engineer who has been with the search giant for eight years. “You has been working with Whitten and the privacy team, notably when the team oversaw the uniting of Google’s 70+ privacy policies into one (which caused the Internet to freak out),” writes Forbes. 

Neither Facebook nor its star COO, Sheryl Sandberg, are defendants in an ongoing lawsuit alleging that seven technology companies broke antitrust laws by agreeing to not recruit from each other. Yet, as Bloomberg reports, U.S. District Judge Lucy H. Koh now wants Sandberg to answer some questions regarding the case. Lawyers for the plaintiffs say they are merely gathering facts, but that Sandberg and Facebook failed to respond to an earlier subpoena.  

Last week, Facebook officially launched a threaded comment feature, which BuzzFeed suggests could threaten Reddit. The feature lets users respond to specific comment in a conversation thread, “rather than replying broadly to the whole chain,” BF writes. “Armed now with the ability to carry on cleaner, more direct conversations, Facebook appears to be experimenting with its own Q&A style service -- much like Reddit's popular ‘Ask Me Anything’ section.” 

Preparing to expand its business, Aereo -- the Web TV startup backed Barry Diller -- has held partnership talks with several top pay-TV distributors and Internet service providers, The Wall Street Journal reports. Presently, Aereo is only available in the New York City region. However, “It could expand its reach significantly if it joins forces with cable, satellite or phone concerns,” WSJ writes. 

Google is beginning the week in damage-control mode after choosing to honor the birthday of Cesar Chavez with a Google Doodle. “On most days, the move wouldn't stir up much controversy,” ABCNews suggests. “But this time, some conservative sites are questioning the tech giant's decision to recognize the labor leader and not the Easter holiday, which [fell] on the same day.” 

Just as Facebook was getting its mobile footing, a new breed of messaging apps are threatening the company’s fortunes. “The hot apps include Kik and Whatsapp, both products of North American startups, as well as Kakao Inc's KakaoTalk, NHN Corp's LINE and Tencent Holdings Ltd's WeChat, which have blossomed in Asian markets,” Reuters reports. “Combining elements of text messaging and social networking, the apps provide a quick-fire way for smartphone users to trade everything.”