Of all the low-hanging fruit in the journalistic world, the social media reaction story has to be one of the easiest to write. It's pretty simple: all you do is look at social media after a major event and see what people are saying. Then, you write it down. Then you publish what you wrote. Voila! Journalism prt a porter!

The online audio scene is growing and changing at a positively maniacal rate, with several entirely new platforms in the works and countless new features from existing services. Frankly it's all a bit overwhelming, but here's my attempt at a brief roundup of this burgeoning, mutating marketplace. One thing is clear: Pandora should be very nervous.

Oh, joy: Sweatband.com, an e-commerce site for fitness enthusiasts in the U.K., has compiled a list of the ten most annoying social media behaviors, based on a survey of 1,793 British social media users. They are, broadly speaking, exactly what you'd expect -- but it's still validating to know that, yes, other people find all the bragging and complaining just as annoying as you do.

Misty VanHorn, 22, of Sallisaw, Oklahoma, was arrested on Saturday for attempting to sell her 10-month-old daughter and 2-year-old son on Facebook, according to The Sequoyah County Times, which reported the news over the weekend. She is being held on $40,000 bail.

Social networks are useful but also present big professional pitfalls by allowing individuals to mix their personal and work communities, according to a new paper by three business school professors from UPenn's Wharton School and the University of Rouen in France. The fluid boundaries (or total lack of boundaries) can lead to inappropriate sharing, especially in the absence of traditional interpersonal cues, according to the authors of "When Worlds Collide in Cyberspace: How Boundary Work in Online Social Networks Impacts Professional Relationships."

I'd like to be able to start this column with an impressive statistic about the number of changes Facebook has made over the years, but that would be impossible, because there are simply too many to count. I can remember the first time Facebook triggered outrage by changing things up, back in 2007, when it dumped Beacon on its users like a bucket of dead fish -- ah, it was a simpler time. Since then, however, there have been so many tweaks, new features, redesigns, revamps, makeovers, overhauls, facelifts, and whatever else you want to call them that I couldn't …

Hospitals with more Facebook "likes" tend to have lower death rates, according to a new study recently published in the American Journal of Medical Quality. The study, titled "Do Patients 'Like' Good Care? Measuring Hospital Quality via Facebook," was based on a survey of all 82 hospitals within a 25-mile radius New York City.

Tumblr is on its way to profitability this year, according to a Bloomberg report, due in large part to the blog platform's plans to introduce mobile advertising before the end of the second quarter.

Facebook's massive popularity is due at least in part to its psychological impact on users, including beneficial effects like bolstering feelings of confidence and self-worth, according to a new study by researchers at the University of Wisconsin and Cornell University.

Digital technology has had a huge impact on society's attitudes and behaviors in sexual and romantic relationships, according to a new study from ad shop Havas Worldwide. The study, based on a survey of 2,000 men and women in the U.S. and the U.K. earlier this month, found that 50% of those polled know someone whose romantic relationship started online. And 25% indicated that they know someone whose offline relationship ended because of their actions online.