How quickly has Facebook grown globally? Researchers at Nielsen collected some markers to help everyone following today’s IPO get a grasp on the stunning numbers involved. Read More

As of mid-afternoon on Friday, in one of the most anticipated initial public offerings (IPOs) in history, shares of social networking giant Facebook were up by about 2.5 percent in their first day of trading. Read More

Webkinz, the world of cute animals from Toronto-based Ganz, has extended its brand to Facebook with "Webkinz Friends," a new social game. Read More

Facebook users with Android smartphones spend over 15 minutes a day using their Facebook app, and they open the app an average of six times a day. Read More

Mass Relevance, which specializes in social curation and integration technology, closed $3.3 million in venture capital funding in a round led by Austin Ventures. Read More

Pinterest has raised $100 million in funding in a round led by Japanese online retail giant Rakuten Inc., which puts a $1.5 billion valuation on the online scrapbook and sharing site. Read More

Turner Broadcasting System took a minority stake in Funny Or Die that links the TBS and Adult Swim entertainment networks with the comedy destination property. Read More

Round up the usual suspects tomorrow, when Warner Bros. Digital Distribution screens the classic movie "Casablanca," free and with social integration, on Facebook. Read More

In honor of Mother's Day, Nielsen looked at American moms online and found they're more likely than the average to use Facebook, Pinterest, and visit blogs. Read More

Facebook co-founder Eduardo Saverin has given up his U.S. citizenship, shortly before social media company's flotation and the tax bill he'll receive thereafter. Read More