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There are few more sybaritic pleasures than scratching an itch.

But according to a study just out in the British Journal of Dermatology, the intensity of the scratching delight varies with the location of the itch.

It's not that the panicked Republican establishment needed more fodder for its attack on GOP presidential candidate Newt Gingrich as the wrong man to take on President Obama this fall.

They've managed quite nicely themselves over the past few days, piling on the pugnacious former House speaker, circa mid-1990s, in direct proportion to Gingrich's rise in the polls in Florida and nationwide.

We've been hearing it would happen for quite a while, so keep that in mind when you read this scoop. The Wall Street Journal says:

"Facebook Inc. could file papers for an initial public offering as early as next week and is currently looking at a deal that would value the social network between $75 billion to $100 billion, said people familiar with the matter."

Colton Harris-Moore, who gained international fame for being the so-called Barefoot Bandit, was just sentenced by a federal judge to 6 1/2 years in prison.

But since the time is to be served while he finishes out the 7 years in prison that he was sentenced to by a state court last December, it looks like Harris-Moore won't actually be spending any additional time behind bars.

The Associated Press reminds us that in 2010:

Research already demonstrates that physicians are sometimes uncomfortable talking about weight with their obese patients. Now, a new study shows that the doctors' weight makes a difference too.

Physicians who pack on the pounds discuss weight loss less frequently with obese patients than doctors who have normal body mass indexes (18 percent versus 30 percent), according to the report published this week in the medical journal Obesity.

One of the more dramatic moments in Thursday night's Republican presidential debate was when Mitt Romney said it was "repulsive" of Newt Gingrich to suggest that Romney was the most "anti-immigrant" candidate among the GOP contenders.

Fitch Ratings announced it was cutting the ratings of Italy, Spain, Belgium, Slovenia, and Cyprus.

Italy and Spain, two of the biggest eurozone economies, suffered a two-notch drop. Italy went from A+ to A- and Spain went from A to AA-.

Bloomberg reports:

If winter has you daydreaming of a vacation to sunny lands, you might want to consider the risk of dengue fever in your plans.

The number of cases of the disease, a severe flu-like illness with excruciating headaches, joint and muscle pain, is soaring, according to an update from the World Health Organization.

Now more than 40 percent of the world's population is at risk — 2.5 billion people, according to the group. In 2010, there were 1.6 million cases in the Americas alone.

So how many people have human papillomavirus in their mouths?

Quite a few, say researchers who got more than 5,000 volunteers across the country to spit into a cup and answer detailed questions about their sex lives.

The bottom line: 6.9 percent of people in the U.S. (ages 14 to 69) have oral infections with HPV. Some types of HPV are linked to cancer and genital warts.

Taking an issue he highlighted during his State of the Union address on the road, President Obama this morning told an audience at the University of Michigan that he is "putting colleges on notice" that the era of unabated tuition hikes is over, as The Associated Press reports.

The Defense Department has spent close to $3 billion since 2007 to treat and study traumatic brain injuries and post traumatic stress disorder — the leading injuries suffered by U.S. military personnel in Iraq and Afghanistan. But a federal investigation finds that the department's programs are so disorganized that it's difficult to figure out how the money has been spent.

For more than a decade, Republican presidential candidate Ron Paul has had to deal with questions about why a newsletter he published in the 1980s and '90s included some racist writings. He's said more than once that, while he takes responsibility for what was in the newsletters, he didn't pay enough attention to what was printed, wasn't aware of the racist messages at the time and rejects them.

Somehow 35.5 pounds of cocaine wrapped in a fake diplomatic sack made it to the United Nations' headquarters in New York. The AFP reports that U.N. officials said on Thursday that the cocaine had been shipped from Mexico through DHL, which handles U.N. mail.

At the rate they're going, those nutritious-looking sprouts may disappear from sandwiches and salads near you in not too long. And that may be a good thing.

This week, the Beaumont, Tex.-based Jason's Deli chain announced that it would no longer serve fresh sprouts, citing frequent recalls due to bacterial contamination.

Violence is increasing in Syria, with activists reporting multiple clashes in cities. The U.N. Security Council is meeting Friday to discuss a resolution on the conflict there. It's also likely to ask President Bashar Assad to step down.

Good morning!

Our early headlines:

Twitter Announces It Can Now Block Content By Country

Signaling Modest Growth, U.S. GDP Grew At 2.8 Percent In Fourth Quarter

Twitter announced, last night, that it now has the ability to block content by country. This means, for example, that if a Tweet breaks a German law, Twitter can now block it in Germany but leave it up in the rest of the world.

In a blog post, Twitter explained:

The United States economy continued to expand modestly toward the end of 2011. The Commerce Department says it grew at an annual rate of 2.8 percent in the fourth quarter and 1.7 in all of 2011.

This means that the economy has expanded for the last two years, after a 3.5 percent decline in 2009. The economy did slow down in 2011. It grew 3 percent in 2010.

The Commerce Department explains:

Costa Crociere SpA came to an agreement with several consumer groups and is offering 11,000 euros or $14,460 to each of the passengers of the cruise ship that ran aground off the Italian coast, earlier this month.

The Toronto Sun explains the money is for passengers who were uninjured and is to pay for "for items lost and any psychological damages." The cruise line will also refund the cost of the cruise and any travel costs that resulted from the crash.

Using an explosives packed car, a suicide bomber killed 32 people near a funeral possession in the predominantly Shiite neighborhood of Zafaraniyah in Baghdad.

The AP reports that about 65 people were wounded and most of the people killed were police escorting the funeral.

The AP reports:

When it comes to buying cars, women do their homework — and it pays off. A recent report from LeaseTrader.com finds women generally get better deals than men when they buy cars.

John Sternal of LeaseTrader tells NPR's Sonari Glinton on Morning Edition that women's participation in car buying is changing.

We still don't know who'll win the Florida primary Tuesday, but after the past two debates it seems far likelier to be Mitt Romney.

Why? Because Newt Gingrich had vaulted from the margins to the forefront of the Republican presidential race in South Carolina on the strength of two debate performances. And that weapon has ceased to work in his favor.

The NBC and CNN debates this week in Tampa and Jacksonville went a long way toward neutralizing the impression created by debates the previous week in Myrtle Beach and Charleston.

Transcript

STEVE INSKEEP, HOST:

The transport minister in Australia denounced a political opponent. He said the opponent wasn't interested in fixing a problem, only in making people "afraid of it" and telling them "who's to blame for it." Critics note Michael Douglas used that line in Aaron Sorkin's movie The American President.

Egyptian authorities are preventing six Americans, including the son of Transportation Secretary Ray LaHood, from leaving the country. They work for non-governmental agencies that were raided by Egyptian security forces last month.