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TBG Digital’s CEO Simon Mansell tells me “this is huge news that show mobile is potentially going to be the big revenue driver that Facebook needs, especially because the usage in there.”

According to a new study by TBG Digital on 278,389,453 Sponsored Story ad impressions across 17 clients, mobile news feed Sponsored Stories (the only ads Facebook shows on mobile) have a stunning click-through rate of 1.14% at a $0.86 CPC. That means Facebook earns $9.86 per 1000 impressions (eCPM), and that could actually rise as more advertisers realize the power of mobile Sponsored Stories and compete for impressions there.

Compare those numbers to the desktop news feed Sponsored Stories that get a 0.588% CTR at $0.63 CPC and earn Facebook an eCPM of $3.72, and Facebook is getting 1.93x the CTR and earning 2.65x as much on mobile sponsored stories compared to what it makes on the web.

71% of smartphone users search because of an ad they’ve seen either online or offline; 82% of smartphone users notice mobile ads, 74% of smartphone shoppers make a purchase as a result of using their smartphones to help with shopping, and 88% of those who look for local information on their smartphones take action within a day.

These are some of the key findings from “The Mobile Movement: Understanding Smartphone Users,” a study from Google and conducted by Ipsos OTX, an independent market research firm, among 5,013 US adult smartphone Internet users at the end of 2010.

General Smartphone Usage: Smartphones have become an integral part of users’ daily lives. Consumers use smartphones as an extension of their desktop computers and use it as they multi-task and consume other media.81% browse the Internet, 77% search, 68% use an app, and 48% watch videos on their smartphone 72% use their smartphones while consuming other media, with a third while watching TV 93% of smartphone owners use their smartphones while at home 

According to IDC, mobile web browsing will soon eclipse desktop browsing in the U.S. and worldwide. This consumption of mobile content isn’t just happening on the go; 93% of people are now using their mobile devices to browse the Web from their homes, according to a study from Google.

The main development methodology behind responsive design is the use of media query functionality in CSS3. Media queries target not only certain device types (e.g., Android vs. iPhone), but actually inspect the physical characteristics of the device that renders the page. For example, the code below “asks” the device if its max horizontal resolution is equal to 480px: <link rel="stylesheet" type="text/css", media="screen and (max-device-width: 480px)", href="http://uxmag.com/iphone.css" /> If it is 480px, the device will load iphone.css. If not, the link is ignored. You can also include media queries in CSS as part of an @media rule:

a responsive design approach does not involve putting all of your content in front of the reader. Responsive design is about putting the right content in users’ hands according to the context of their interaction.

Convincing casual social media users that something like Airtime isn't just speed dating is a hard sell. Blame Chatroulette, mid-'90s AOL chat rooms or Grindr, but meeting strangers through technology not for sex still feels inescapably creepy, even when it's cleverly facilitated by an app such as Glancee or Highlight. We like connecting with the people we meet in person after the fact, and even that's hard to make adequate time for. When it comes to video chat with the people we already know, there's no compelling reason to opt for Airtime over a Google+ Hangout, a Skype chat or even a Facetime call. And if you're interested in connecting with friends and family via video to begin with, odds are you've already picked your poison. Sean Parker may want to make Facebook less "boring" by inspiring serendipitous social discovery, but it's hard to imagine that Airtime isn't dead on arrival - there just isn't room for such a diluted blend of existing social tools nor is there the adventurous userbase to adopt them. We have Facebook and Facetime for the people we already know, Twitter and Google+ for the people we want to know and OkCupid and Match.com for the people we want to know, er, intimately. And for the greyer, more "serendipitous" areas? Chatroulette still boasts enough unfettered weirdness for a lifetime.

The impact of social media is harder to measure than, say, the effectiveness of banner ads, because social media are often used to build brand loyalty. A person may see an ad or promoted social media message but choose not to click through, then search for the product later, and finally make a purchase on a third, fourth or fifth visit to the company's website. While social media didn't have a direct hand in the click-through and sale, it did have a hand in how the brand made a conversion.

Too many brands - GM included - rely on likes (which can be artificially inflated) and direct click-throughs (which don't always result in sales). And while the industry is making strides to help brands better measure what they get for their social media buck, there is still a ways to go, Chou said. Social marketing by brands "is just terrible right now," he observed. "I can't tell you exactly what it should be, but I can tell you it sucks right now. People just shout."

Right now, marketers can’t easily measure a follower who doesn’t click on links or interact directly with a brand’s Facebook page or Twitter feed. That will change as social media tracking gets better.