This morning, the National Retail Federation (NRF) issued its forecast for the 2010 holiday shopping season. The NRF believes sales will increase 2.3% to $447.1 billion. The growth is slightly lower than the 10-year average of holiday sales increases (2.5%), but such an increase would be a major improvement over past years. In 2009 holiday sales improved 0.4%, slow but better than the 3.9% decline in 2008.

This week, the world's top retailers will tell investors how the much-discussed holiday season went. Analysts expect a year-over-year gain of 1.3% for stores open at least a year, which of course uses a dismal 2008 as a benchmark.

The holiday shopping season is the last chance retailers get to pump up their financial statements before the close of their fiscal year, which usually comes at the end of January. For some retailers, up to 40% of their revenue comes in the weeks heading into Christmas.

The first estimates for the holiday shopping season have come in. MasterCard (MA) Advisors unit SpendingPulse, which tracks retail spending, puts the result at a year-over-year increase of 3.6%. This includes all form of payment and does not factor in gas and auto sales. The increase comes relative to the 2008 holiday season, which was the worst season in decades for retailers thanks to the global financial crisis.

Says Kamalesh Rao, director of economic research at SpendingPulse, "Last year the economy and consumer spending were in free fall. This year we're talking about an environment that has stabilized, that has seen a leveling off." But, that doesn't mean it's turned the corner yet. Holiday spending isn't enough to cure what ails us.

The holidays have ended, and the real sales have begun. Those choosing to sacrifice sentimentality for savings found retailers only too willing to help, as prices were slashed in the wake of the Christmas rush. Recipients of gift cards stand to see their purchasing power extended, as well, now that redemption time has arrived, and retailers are looking to squeeze in any extra sales they can to pump up their top lines before the books close on the fiscal year, which, for many, comes at the end of January.

Toys "R" Us has offered a deal on Nintendo (NTDOY) Wii games, with the second coming at half price, and Target (TGT) is nearly halving the price of wine glasses and dropping the tag on an argyle women's sweater by nearly a third. Walmart (WMT), which kicked off its cuts at the end of September, is throwing a $50 gift card on top of any Microsoft (MSFT) Xbox 360 buy.

Online retail sales are expected to increase 3% to $28.8 billion for this year's holiday season. The analysts at comScore include traditional retailers, like Macy's (M) in this estimate, but don't count auction sites like eBay (EBAY), travel or corporate sales. The estimate compares favorably against the National Retail Federation's forecast of a 1% year-over-year drop for all retail sales and exceeds the industry's most aggressive holiday season sales estimates of 2%.

Last year, online retail sales fell 3% for the holiday season, the first decline since the industry started keeping score in 2001. Even if we don't hit the 3% growth level this year, 2009 is still expected to be better than 2008, now that the economy has stabilized (at least relative to last year).

Stores were busy on Black Friday, as deals lured recession-weary consumers out of their homes. The spending was cautious, but the crowds and transactions signaled strength.

Nonetheless, retailers are still concerned that the momentum is only temporary. With consumer spending still under pressure because of high unemployment, there's a risk that holiday shopping may not reach the levels the stores would like to see. The day after Thanksgiving is usually the hottest of the year and can account for close to 20% of annual retail sales.

If Thanksgiving is a bird, a beer and a football game for you, prepare to have your thinking challenged. Many retailers are looking to get a head start on Black Friday this year, opening a day early, some of them for the first time. Most Old Navy Stores (GPS) will open their doors on Thursday, along with Wal-Mart (WMT), Toys "R" Us, RadioShack (RSH) and Walgreen's (WAG). Rather than bet solely on Friday, retailers are looking to eke every last dime they can out of the holiday season this year.

The National Retail Federation expects holiday spending to drop 1% this year to $437.6 billion. "Retailers need to be competitive," says NRF spokeswoman Ellen Davis. "There's a lot riding on the success of November and December retail sales."

Retailers expect a strong turnout on Black Friday this year, but they are careful to explain that it doesn't guarantee a winning holiday shopping season.

Consumers are being lured by good deals and special promotions, and Black Friday specials have been leaked earlier than usual this year in the hopes of generating some buzz. The retail sector needs it. Last year's holiday season was the worst in decades, thanks to the financial crisis. This year, the survivors will benefit from fewer competitors chasing the same consumer dollars.

No, don't expect to see windmills and solar panels -- consumers are leaning toward a different kind of green this holiday season: cash. Rather than hit their credit cards, shoppers will only be spending money they have (and can see and touch). Seventy-one percent of consumers are looking to cash and debit cards as their primary form of payment for holiday shopping this year, which the National Retail Foundation pegs as the highest level since 2005.

This could be a problem for the retailers.

Sure, you'd think that the merchant fees on credit cards make cash more attractive to the sellers. But, Ellen Davis, a spokesperson for the NRF, says that most retailers have found they can talk credit card buyers into up-sells more easily. That leads to a bigger basket size and more revenue. Done successfully, it should comfortably absorb the impact of merchant fees. James Roberts, a marketing professor at Baylor University, adds that using plastic makes consumers more likely to buy at all, let alone more.

Okay, so we all know retailers are looking for every holiday edge this holiday season. Consumer spending's been down, and the sprint to Christmas offers the last chance to pump up those Q4 numbers. They are trying out new ways to reach and engage shoppers, particularly via social media. But, the most effective way to bring new customers into the fold -- and keep them around for a while -- may be to pick up the shipping tab. It's pretty old fashioned, but it's best by test.

Once considered a bonus, a special effort, free shipping isn't really optional any more. If a shopper has to pay for shipping from one retailer, he may move on, knowing that plenty of others aren't charging for it. Rebecca Lieb, vice president at Econsultancy, a digital marketing news publisher, notes, "You're delighted the first time you get free shipping, but you expect it the second time."

And, free shipping shouldn't come with any strings attached, according to Shop.org's eHoliday Study (Shop.org is the e-commerce division of the National Retail Federation). Five years ago, 25% of retailers didn't charge for shipping during the busiest shopping day of the year. This year, however, 57% are planning not to hit their customers up for the extra cash, making this cost just another expense associated with running the business during the holiday season.

What's on your Christmas wish list? If the National Retail Federation is right, gift cards are probably holding a respectable place toward the top of the list. These little pieces of plastic are requested most this time of year, and they have the added perk of allowing people to get what they want instead of money wasted on presents that sucks. This trend may give retailers a hand this year, as they'll be able to keep their inventories down.

If shoppers are slow with the cash, retailers won't have to resort to just slashing prices as they had to last year to move product out the door. When the stuff on the shelves is cheap, gift cards aren't as attractive because there's a deal to be had! This year, if inventories are kept down, gift cards are more likely to move.

Traditional retailers haven't exactly embraced online sales channels. Sure, they all have websites, and they sell varying amounts of merchandise through them, but they've been slow to tap into the potential. When I was watching the space as an analyst at a major consulting firm (admittedly, back in 2007), many retailers equated a website to a new store opening. Finally, however, this industry is starting to see the potential of this venue, particularly when it comes to tracking consumer behavior.

When the CEO of Macy's (NYSE: M), Terry Lundgren, says that online sales are only good for 6% of last year's total sales, it's a hint. The translation: "We focus on where the revenue is" is much different from "We focus on where the revenue could be." Aeropostale (NYSE: ARO), on the other hand, sees the upside of playing in the online space, which is where it saw revenues spike 85% last year. Aeropostale has seen increases in traditional venues too, but nothing like what it's realized on the web.

So, maybe there's something to this internet, after all.

It's going to get worse before it gets better, according to Stone & McCarthy Research. Early 2010 has "the more troublesome outlook," as the economy will have to walk on its own, the research firm says. This year, it's had a pair of crutches: tax credits for first-time home buyers and the cash-for-clunkers program. So, if the stimulus hasn't taken hold by the end of the year, the first quarter could be a bruiser.

The firm adds that "continued growth in aggregate demand" is needed, bringing the discussion back to consumer spending . . . which is where it will always land. We're likely to see the 3.2% growth rate from July through September drop to 2.4% at the end of the year because the crutches will have been gone. And, let's not forget that unemployment is expected to break the 10% level next year.

Consumers are finally spending more, with September posting the first gain in more than a year. The International Council of Shopping Centers and Goldman Sachs (NYSE: GS) found that retail sales inched 0.1% higher last month. It doesn't seem like much, but a gain when you anticipate a fall is good news magnified. But, it came at the expense of great deals and other tools to entice somewhat hesitant customers into stores.

Kohl's (NYSE: KSS) and Limited Brands (NYSE: LTD) reported sales increases in September for stores open more than a year. J.C. Penney (NYSE: JCP), Macy's (NYSE: M) and Target (NYSE: TGT) posted declines, but they were better than expected. Delayed school openings thanks to a late Labor Day helped push to September sales that might have occurred in August otherwise.

Of course, all eyes are on the coming holiday season. The National Retail Federation forecasts U.S. consumer spending of $437.6 billion – up only slightly from $433.7 billion four years ago. So, we still have a lot of ground to make up before we can celebrate a recovery. As long as the situation is staying steady, though, we'll at least have a solid starting point.

We all know that this Christmas is going to be particularly tough on retailers. Wal-Mart (NYSE: WMT), Target (NYSE: TGT), Sears (NASDAQ: SHLD), and Best Buy (NYSE: BBY), as well as hipper competitors Abercrombie & Fitch (NYSE: ANF) and Gap (NYSE: GPS), will be fighting it out at the mall Mad-Max style the next several weeks.

It's not going to be pretty. With comps and cash flows on the line, these chains will be looking to extract as much discretionary money from consumer wallets as is heavenly possible. But there's a troubling sign with respect to a popular gift option this year.

Gift cards have been soaring in popularity over the years. Not only do they make great presents, but retailers love them because they represent a little insurance policy: if the Christmas quarter isn't as strong as a retailer would like, then redemption of gift cards will theoretically help the bottom line in the next quarter. The card purchases do not get recorded as a sale until they are redeemed. So it's like a squirrel putting food away for the long, cold winter.

Unfortunately, we have some bad news on this front: gift-card sales are expected to be down 6% this season. That's not what retail investors want to hear. It's just another reason for traders to short this sector.