Although Yahoo has not been able to catch up with the overall online advertising growth, this has not deterred the company from experimenting with growth areas. In the online advertising market, local marketing is one of the upcoming trends and has attracted players like Google, AOL and Facebook in addition to Yahoo. Here we will analyze the growth prospects of this trend and how it could benefit Yahoo in particular. We currently maintain $17.88 price estimate for Yahoo stock, which is about 6% above market price.

Yahoo (YHOO), which competes with Google (GOOG) and AOL (AOL) in the search business, is seeing a relatively stable profit margin of 42% since 2008 by our estimates, and we expect the margin to rise slightly over the coming years as Yahoo benefits from its partnership with Microsoft (MSFT). In 2009, Yahoo and Microsoft signed a deal whereby Yahoo will not only use Microsoft's search technology on its websites but will also keep a majority of the ad revenues. Yahoo is also making efforts to control costs by cutting its workforce, which should improve profitability in the short term.

Analyst Upgrades

• SINA (SINA) to overweight from neutral at Piper Jaffray.
• Texas Instruments (TXN), ON Semiconductor (ONNN), Xilinx (XLNX) and Valassis (VCI) to overweight from neutral at JPMorgan.
• Salesforce.com (CRM) to buy from hold at Canaccord.
• Peet's Coffee (PEET) to buy from neutral at Janney Capital.
• Invesco Mortgage (IVR) to overweight from equal weight at Barclays.
• BTU International (BTUI) to buy from hold at Wunderlich.
• Coca-Cola Femsa (KOF) to overweight from neutral at HSBC.
• Chipotle (CMG) to market perform from underperform at Morgan Keegan.

The U.S. online display advertising market saw a revival in 2010, with an estimated growth of 17% over 2009. Continued growth means greater competition amongst players like Yahoo! (YHOO), Facebook, Google (GOOG), Aol (AOL) and New York Times (NYT).

We currently maintain a $17.88 price estimate for Yahoo, in line with market price. Display advertising accounts for roughly 18% of Yahoo's stock value by our estimates.

Google's (GOOG) Android smart phone operating system has seen tremendous adoption over the past year as its market share has increased from a mere 6% in 2009 to around 24% by 2010. This has come at the expense of smart phone operating systems from Nokia (NOK), Research in Motion (RIMM) and Microsoft (MSFT). The other main competitor, Apple's (AAPL) iPhone OS, saw a slight increase during this time period from 26% to 28%.

We believe that Android's success has to do with the fact that it partnered with smart phone makers like Motorola Mobility (MMI), Dell (DELL), LG and Sony Ericsson (SNE) in providing its OS. Higher Android adoption helps Google by enabling more mobile searches from Google's platform as Google is the default search engine on Android phones.

Analyst Upgrades

• Polo Ralph Lauren (RL) to neutral from underperform at BofA/Merrill.
• Sigma-Aldrich (SIAL) to outperform from market perform at Leerink.
• Petrobras (PBR) to overweight from equal weight at Barclays.
• Silvercorp Metals (SVM) to buy from neutral at UBS.
• PROS (PRO) to buy from hold at Jefferies.
• Power Integrations (POWI) and Monolithic Power (MPWR) to buy from neutral at Roth Capital.
• Diodes (DIOD) to outperform from neutral at RW Baird.
• Whole Foods (WFMI) to hold from sell at Hapoalim.
• Sinclair Broadcast (SBGI) to overweight from neutral at JPMorgan.
• Sappi (SPP) to outperform from neutral at Macquarie.
• Alpha Natural (ANR) to buy from hold at BB&T.
• Watts Water (WTS) to buy from hold at Brean Murray.

Yahoo is still trying to play catch up. Helped by cost cuts, Yahoo! (YHOO) posted late Tuesday fourth quarter income of $312 million, or 24 cents a share, more than double last year's income of $153 million, or 11 cents a share, according to the Wall Street Journal. Revenue fell 12% to $1.53 billion from $1.73 billion.

Net revenue, which excludes commissions paid to partners, fell 4% in the quarter to $1.22 billion from $1.26 billion in the year ago period. Excluding the Microsoft (MSFT) impact and certain divestitures, revenue grew by 2% in the quarter.

Analyst Upgrades

• BP (BP) to buy from hold at RBS.
• Symantec (SYMC) to buy from hold at Deutsche Bank.
• GenOn Energy (GEN) and Nationwide Health Properties (NHP) to buy from hold at Citigroup.
• Logitech (LOGI) and Patriot Coal (PCX) to neutral from sell, as well as ARM Holdings (ARMH) to buy from neutral, at Goldman.
• Silvercorp Metals (SVM) to outperform from market perform at BMO Capital.
• Cinemark (CNK) to equal weight from underweight at Morgan Stanley.
• Smith & Nephew (SNN) to market perform from underperform at Bernstein.
• Molex (MOLX) to overweight from underweight at JPMorgan.

The world of Internet traffic moves at lightning speed. So, too, do the moods and preferences of users. Back in 2007, News Corp's (NWS) MySpace was No. 1. Google.com (GOOG) took the No. 1 spot in 2008 and 2009. In 2009, Facebook has taken the No. 1 spot, with 8.9% of U.S. visits, edging Google.com, which had 7.2% of visits, Reuters reported, citing online measurement service Experian Hitwise.

Facebook was started by Mark Zuckerberg and a few classmates in 2004. Facebook users can create profiles with photos, lists of personal interests, contact details and other information. Users can communicate with friends and other users through private or public messages and a chat feature. They can also join interest groups and "like pages."

Analyst Upgrades

• RightNow (RNOW) to overweight from neutral at Piper Jaffray.
• Vivo Participacoes (VIV) to overweight from equal weight at Barclays.
• Genesis Energy (GEL) to outperform from sector perform at RBC Capital.

Analyst Downgrades

• First Community (FCBC) and WesBanco (WSBC) to hold from buy at Stifel Nicolaus.
• Dresser Rand (DRC) to neutral from buy at Global Hunter.

U.S. stock futures are trading lower Wednesday morning as investors are awaiting inflation and manufacturing data. Futures on the Dow Jones Industrial Average dropped 43 points to 11,378.00 and S&P 500 futures lost 5.50 points to 1,231.30. Nasdaq 100 futures dipped 9.50 points to 2,204.50.

U.S. stocks closed higher yesterday, with the blue-chip Dow index rising 0.42%.

Analyst Upgrades

• Intel (INTC) was upgraded to overweight from equal weight and Autodesk (ADSK) to equal weight from underweight at Morgan Stanley.
• Citigroup upgraded Blackrock (BLK) to buy from hold.
• 99c Only Stores (NDN) was upgraded to buy from hold at Deutsche Bank.
• PetSmart (PETM) was upgraded to overweight from equal weight at Barclays.
• Piper Jaffray upgraded Ruth's Hospitality (RUTH) and Morton's Restaurant (MRT) to overweight from neutral.
• BioMed Realty (BMR) was upgraded to market perform from underperform at FBR Capital.
• Wells Fargo upgraded Piedmont (PDM) to market perform from underperform.

Yahoo (YHOO) released third-quarter numbers after the bell on Tuesday, and they didn't do anything for the stock. Shares closed the regular session down 2.7% to $15.49. During the extended-hours period, I saw a quote go by of $15.53. That's right, the equity gained a measly four cents. Traders most certainly weren't applauding that performance.

Very recently, I wrote a bearish piece on the web portal. Since then, the stock has risen. Also, the company has been surrounded by some interesting speculation as of late regarding a potential takeover, with one theoretical scenario involving the owner of BloggingStocks, Aol (AOL).