This may be shocking news, but not everyone's actively managing their identities on 10 social networks and 50 location-based mobile services. Some early adopters have even reached a point where they feel they've been adopting a little too early. They're the ones we'll hear from today.

I'm posting this week from sunny San Francisco, where yesterday's earthquake was only a 3.6, rather than a 5.9 back home in New York. Ah, the irony! Still, in keeping with our earthquake theme, something seismic is happening, and it concerns how competition is actually proving good for Facebook, and by extension, all of us who use it.

Until recently, I used to put mobile social commerce in the same category as Woody Allen's blockbusters and Rick Perry's bad hair days; it's something that couldn't possibly exist. When defining it properly and exploring the possibilities, though, it turns out that mobile social commerce is flourishing.

After I finished a talk in Tulsa, Okla. a few weeks ago, I let myself open a present: my invitation to Spotify, the European streaming music service. It showed up stateside roughly a month ago, and showed up, tantalizingly, in my email a few weeks later. I've been having a blast ever since I downloaded it, particularly digging up music that I somehow never managed to buy in a digital format. My 13-year-old son seems a little obsessed with it, too, and it's allowed me to open up his eyes to the wonderful world of David Bowie and Steely Dan.

Once upon a time, there was a boy tending his social flocks of friends and followers. He would continually go up to the social embankments and shout, "Help, there's a privacy breach!" The bloggers and reporters would all come running, making his cries travel much further. Masses of people changed their privacy settings, even though their privacy wasn't violated at all. Then one day, there really was a serious privacy breach, but when the bloggers and reporters and tweeters and plussers and tumblrers all came along to convey the cries out unto the world, no one believed it was a …

If you think the most interesting media story in the U.K. is the News Corp. phone-hacking scandal, think again. It's actually the controversy in, around and about Twitter's role in the riots that have taken place throughout major English cities this week.

What do Sophia Loren, 46 freezer meals for $96, chalkboard contact paper, a Hamilton Piping Rock watch, a baby hedgehog, and $39 corduroy pants have in common? They're all some of the latest finds on Pinterest, the site behind the "pinning" craze stoking people's passions like few things I've encountered online.

In assessing social media platforms, I rely as much on whether I see my friends, family and neighbors using them as I do on what the pundits say. It's not scientific, I know, because it means that my results are inevitably skewed toward people somewhat like myself: harried mothers of a certain age and their spouses, people from the Northeast, and the assorted archetypes around them, from affluent children to grandmothers who have iPads. But what intrigues me is that you can probably trust this so-called data more than you think. And we should probably pay more attention to it, …

Let's play a game. I'm going to throw out a bunch of statements, each one of which builds on the one before it. Your score is the highest numbered statement that describes you. Be honest, as there's no reward for having the highest score. 1) I am a person. 2) I use a mobile device. 3) I at least occasionally engage in some form of social media usage via my mobile device, such as social networking, tweeting, blogging, or sharing multimedia.