Consumer Confidence saw a huge drop for March, but that failed to hurt the markets as it was largely expected. Housing prices continued south according to national housing survey data from Case Shiller. International stock markets saw a mixed bag on Tuesday, but U.S. investors continued to sit there, buying stocks. Maybe the real catalyst is the fact that very few companies have formally lowered guidance despite the turmoil.

Here are today's unofficial closing bell levels:

Dow Jones: 12,279.01 + 81.13 (0.67%)

Facebook primarily competes with Google (GOOG), Yahoo! (YHOO), Microsoft (MSFT) and Aol (AOL) in the display and search advertising markets. Here we highlight three major revenue streams that contribute to Facebook's value.

We currently peg Facebook's intrinsic value at $45.1 billion.

A new business model is springing up right under our noses. The big players like Apple (AAPL), Amazon.com (AMZN) and Google (GOOG) have put together a one-stop shop in their app stores.

First off, an app store is just that, a place where you can pick and choose the apps you want to download. The app store is also a place where entrepreneurs can develop an app and with permission place it on the iPhone, iPad or Android device.

Despite a weak durable goods figure this morning, despite more woes in Ireland and Portugal, and despite energy rising, the markets managed yet another gain. It is now almost back to 'international markets don't matter' in investor minds despite all of the risks and turmoil.

Here were today's closing bells:

Dow Jones 12,170.56 +84.54 (0.70%)
S&P 500 1,309.66 +12.12 (0.93%)
Nasdaq 2,736.42 +38.12 (1.41%)

Shares of retail giant Best Buy (BBY) traded higher Thursday morning after the company posted better-than-expected earnings for its fourth quarter.

Going into the earnings report, analysts had been expecting to see Best Buy report earnings of $1.84 per share for the quarter. Best Buy topped estimates by posting earnings of $1.98 per share.

Bookseller Barnes & Noble, Inc. (BKS) has been hoping to find a potential buyer, but it appears as though its search will end with no buyer.

The book seller has been searching for months for a potential buyer, and the search will likely continue for a couple more weeks, but people close to the bidding process have stated that it looks unlikely that the company will be able to find a buyer.

Amazon (AMZN) is a leading online retail player selling a variety of products including electronics, apparel, books, DVDs and music. It competes with eBay (EBAY), Walmart (WMT), Costco (COST), Best Buy (BBY) and Overstock.com (OSTK) in this market. Amazon recently launched an unlimited video streaming service for Amazon Prime customers that will rival that of Netflix
(NFLX).

Analyst Upgrades

• Medicis (MRX) to overweight from neutral at Piper Jaffray, to outperform from market perform at Bernstein, to outperform from sector perform at RBC Capital and to overweight from neutral at JPMorgan.
• Wellpoint (WLP) to buy from neutral at Davenport.
• Humana (HUM) to buy from hold at Jefferies.
• Frontier Oil (FTO) to equal weight from underweight and Resources Connection (RECN) to overweight from equal weight at Barclays.

Borders Group, one of the two main brick-and-mortar bookstore competitors to online-only retailer Amazon (AMZN), recently filed for Chapter 11 bankruptcy. The development could present new opportunities for Amazon, which has already benefited from the growing digitization of literary content. Borders has indicated that it will close 200 stores, representing about 30% of its 642 stores in operation. The stores are expected to close by April 2011.

Analyst Upgrades

• Athenahealth (ATHN), Ensco (ESV), Pride International (PDE) and Sinclair Broadcast (SBGI) to outperform from market perform at Wells Fargo.
• CIRCOR (CIR) to buy from hold at BB&T.
• Urban Outfitters (URBN) to hold from sell at Citigroup.
• Shaw Group (SHAW) to buy from neutral at UBS.
• MGM Resorts (MGM) and Boyd Gaming (BYD) to buy from neutral, as well as Intrepid Potash (IPI) to neutral from underperform, at BofA/Merrill.
• Carlisle (CSL) to buy from neutral at SunTrust.

There's a new industry in the making. It's in the way we buy and read books. Electronic books, or e-books, are taking the book market by storm. Here's a mind blowing statistic. Barnes & Noble (BKS) announced that in December its e-book sales exceeded print books, as reported in MSNMoney.

The two big leaders in the e-book market are Amazon.com (AMZN) and Barnes & Noble with the Kindle and Nook readers respectively. Both companies said that e-readers are their best-selling product of all time.

According to the Wall Street Journal (subscription required), Amazon.com (AMZN) is launching a bulk email sending service aimed at businesses and developers. The goal is to expand its Web server services.

Amazon already has huge servers. The new email service is a way to gain added revenue. The service is called Amazon Simple Email Service (SES). The program offers a free usage tier, after which customers pay 10 cents per thousand email messages sent.

Like millions of other Christmas shoppers, I ran-up a big bill on Amazon.com (AMZN). Actually, I do this throughout the year. The fact is that Amazon's selection and pricing are top-notch. Shipping is also quick.

But these things aren't cheap. On the latest quarterly report, Amazon.com showed a big increase in expenses, which put a crimp in margins. Friday morning trading, the stock was off 8% to $170.