It took the whole day, but Facebook finally—as many expected—filed its S-1 with the Securities Exchange Commission for its long-awaited IPO. While guesstimates for how much Facebook would try to raise ranged from $5 billion to $10 billion, in the end, it looks like it is the lower of that range: $5 billion.

Apple (NSDQ: AAPL) has accused Samsung of “slavishly copying” its hardware designs; but whether or not that is true, one area where Samsung is taking a note from Apple is in how it debuts its big products. The company today announced that it would not be launching its next big smartphone, the Galaxy S III, at this month’s Mobile World Congress in Barcelona, as originally expected.

Research in Motion (NSDQ: RIMM) will be pinning its comeback hopes on the first generation of BlackBerry phones to run its BlackBerry 10 operating system, and it seems to have settled on a design. Leaked media images to a friendly outlet suggest that RIM wants to borrow cues from the Playbook tablet when it releases those handsets later this year.

Book marketing firm Verso Advertising recently found that over half of book buyers say they are “not at all likely” to purchase an e-reader in the next 12 months—up from 40 percent in 2009. Why?

Another piece in Apple’s worldwide expansion looks like it might at long last be coming into view: the leading CDMA operator in China, China Telecom, says that it will start to sell the iPhone 4S by the end of this month or early March.

Disney (NYSE: DIS) Mobile, the short-lived U.S. MVNO that found a new lease of life in Japan through a Softbank JV in 2008, has now launched two new Android handsets in partnership with NTT Docomo, the country’s biggest carrier.

The rising popularity of streaming video services is causing a knock-on effect for companies serving ads around that content. And here’s another example of that in action: today UK-based video ad platform Videoplaza is announcing a new $12 million round of funding.

Some fallout from the various asset offloads we have seen from Nokia (NYSE: NOK) in the last year: Synchronica, which bought Nokia’s messaging business for $25 million in June 2011, has itself become a takeover target—apparently because it will not be able to make payments on money still owed to Nokia.

Zite has cut a deal with Intel (NSDQ: INTC) to have the chip giant sponsor the technology section of its mobile news reading app, only the second sponsor to grace its pages. Intel will sponsor Zite’s technology section and will get to promote selected articles in exchange for its financial support.

Amazon (NSDQ: AMZN) says unit sales of print books grew by “double digits” in Q4 compared to last year. That “is impressive given the shift to Kindle,” said CFO Tom Szkutak in the investor call following this afternoon’s disappointing earnings report.

Amazon (NSDQ: AMZN) disappointed investors by reporting Q4 2011 revenues of $17.4 billion this afternoon, up 35 percent from a year ago but missing analyst estimates. Net income slid to $177 million on earnings of $0.38 per share, down 58 percent from this time last year, and shares were down 8 percent in after-hours trading.

		EPS*	Rev. vs Q410	Net Inc. vs Q410
AMZN	Release		34.6%	57.5%

* vs. Analysts' Estimates: Beat Met Missed

Nokia is working on a Windows Phone model that incorporates NFC (Near Field Communications) technology to connect to external accessories – and is even considering versions with wireless charging, its design chief has indicated in an exclusive interview.

E-reader usage is growing beyond a group of early adopters, but new stats suggest that consumers are also increasingly resistant to buying an e-reader.

The ongoing, back-and-forth legal fight that is the Apple/Samsung patent dispute today took on a new dimension in one of its key battlegrounds, when the European Commission launched an antitrust inquiry into Samsung’s technology licensing practices.

Napoleon once described the UK as a “nation of shopkeepers”, so it is somewhat fitting that this is where Apple (NSDQ: AAPL) has gone to find its next retail supremo.