In terms of sheer numbers, growth in emerging markets is helping Android to increase its lead over Apple's iOS mobile operating system, according to a new report from App Annie. But in terms of actual money, Apple continues to clean up, the analytics firm finds.

And now the balancing act begins in earnest. With his Twitter CEO cap firmly on and facing forward, Jack Dorsey's other company, Square, has now filed for an initial public offering.

Wouldn't it be nice if you could just erase your bad memories? Facebook thinks so, and thus is giving users some new tools to trim unwanted memories from their virtual minds. You can now tell Facebook's "On This Day" feature -- which fills your News Feed with old photos -- to exclude specific individuals and dates.

In my book, Snapchat's failures are more impressive than its successes. They show a maturity and a degree of willingness to change course that you'd expect from an older and more seasoned firm. In the latest example, the social sensation is pressing pause on its original content efforts, shelving Snap Channel, and sending home the 15-person team behind the quasi-content studio.

Grow or die: The words are gospel in Silicon Valley, as well as Wall Street, where much of its stock is traded. Yet, until he can get his house in order, Jack Dorsey appears ready to pull back the reins on Twitter's expansion plans. Any day now, the social giant is expected to announce companywide layoffs.

I'm a non-smoking libertarian. That is, I prize autonomy and freedom of choice, but I also know I never would have kicked the habit without pressure from then-New York City Mayor Michael Bloomberg and my future wife. Together, their anti-smoking policies set me straight, and saved me from a world of hurt. Like a lot of people, therefore, I'm conflicted about mounting pressure to regulate mobile use.

Looks like legacy news media is going after mobile in a bigger way. After celebrating 1 million digital subscribers this week, the New York Times Company released an 11-page strategy memo outlining its plan to double digital revenue to $800 million by 2020 and leverage mobile in a much bigger way.

Take that, Facebook! Trying to one-up the social giant and its Instant Articles initiative, Google is officially unveiling "Accelerated Mobile Pages."

For reasons that remains mostly unknown (Ballmer's braggadocio? Strategic shortsightedness born from bureaucracy?) Microsoft was extremely late to the mobile party. As a result, the mobile operating ecosystem is still dominated by Google's Android and Apple. Yet under the stewardship of CEO Satya Nadella, the company that Bill Gates built is finally showing signs of mobile life. There are now 110 million devices running Windows 10 designed to run seamlessly across platforms, Microsoft said this morning during its Windows 10 hardware event.

It's the stuff of tech-world legend. The brilliant CEO is banished by his board, only to come back and take the company he founded to new and greater heights. Steve Jobs did it. Now that Jack Dorsey has made his return to Twitter official, some are expecting him to fulfill a similar destiny. But Dorsey has yet to prove himself worthy of being mentioned in the same breath as Jobs.