Robert Scheer

Editor, Truthdig.com; Author, 'The Great American Stickup'

Shredding privacy is the essence of Tumblr's appeal to Yahoo, and even though it has said it will retain the social networking site's founders in key positions, one way or another that very personal data will be mined and inevitably fall into what users will discover to be the wrong hands.

Elaine Mah

Director, Canada at Intel Corporation

I'm enthusiastic about the bright future that is ahead if we can continue to foster and encourage governments, business leaders and young students to look beyond the limits to make the impossible, possible. I find myself wondering what it will take to win in this Third Industrial Revolution, and I keep coming back to our youth, these students whose brilliant minds know no limits. Are we doing enough to encourage and inspire them? Are we finding the right venues to foster innovation and commercialization of the best ideas in Canada, or will we retain our role as an exporter of raw goods, rather than an information economy of the future?

Brian Levin

Deconstructing politics, policy and current events

I want Apple to innovate with new "incredibly great" products that wow the world like the iMac and iPhone did--not with new ways of nickel and diming Uncle Sam. Do what's right and stick to what Apple does best and continued success will surely follow.

Jesse Seaver

www.jesseseaver.com

Make no mistake, this is no different than any other high-tech stock. It's risky, it's volatile, and you should not invest any more than you are prepared to forfeit all together.

Maude Standish

Co-Founder of Tarot a Millennial Trend Research Company

Though permanence will continue to be one of the assets of the digital age, with an influx of technologies that make it so you don't need to be haunted by your past, it's likely that soon most Millennial consumers will demand to choose how long a digital property should exist for.

Larry Magid

Technology journalist

Our job as parents is to talk with (not at) our kids and help them develop life-time habits that will protect them in just about all situations online and offline.

Hillel Fuld

Senior Evangelist, inneractive

When you get a first glimpse of what Brow.si does to any mobile site, you will essentially forget everything you know about the mobile web. No, seriously.

Green Futures

The leading magazine on environmental solutions and sustainable futures

Food shortages in India are compounded by a lack of cold-chain storage facilities, but a new solar-powered cold storage device, developed by the University of Cincinnati in partnership with industry, could put this problem on ice.

Jonathan Aberman

Founder, Amplifier Ventures

As I have read the various articles and blogs about Google Glass over the last few weeks, it has led me to marvel at how completely people are missing the point.

Craig Kanalley

Senior Editor, Big News & Live Events, The Huffington Post

While it's true social networks often start with relatively few ads, it's a given that'll change in time. Now Yahoo has acquired Tumblr, and more ads are on the way. Needless to say, not everyone is happy about this.

Dave Johnson

Fellow, Campaign for America's Future

Apple (like many giant, multinational corporations) has been avoiding paying the taxes they owe to the country by setting up foreign "subsidiaries" in tax-haven countries, and moving jobs out of the country. Now they want a special tax break to reward them for doing that.

Ian Cleary

Social Media Tools and Technology Specialist

NASA was recently named one of most engaged brands on Twitter. I recently caught up with NASA's Social Media Manager John Yembrick and Deputy Social Media Manager Jason Townsend to find out what exactly they are doing to engage their audience.

Melissa Moritz

Managing Director, Teach for America STEM Initiative

I can honestly -- and naively -- say that it never once occurred to me that I couldn't grow up to be anything I wanted. It wasn't until I started my current role that I realized that a woman who was encouraged to pursue STEM as a child can be a rare thing indeed.

Soraya Chemaly, Jaclyn Friedman and Laura Bates

We call on Facebook to make the only responsible decision and take swift, clear action on this issue, to bring your policy on rape and domestic violence into line with your own moderation goals and guidelines.

Richard Tate

Vice President of Communications & Marketing, HopeLab

Last month, in a waiting room at Lucile Packard Children's Hospital in Palo Alto, Calif., a small boy sat with a laptop, engrossed in a game. The game he played is Re-Mission 2: Nanobot's Revenge, one of a new collection of free online games for young cancer patients.

Macie Melendez

Assistant editor, Home Energy magazine

These laws have formed the basis of a modern-day witch-hunt that thrives on the vagaries of the Internet and too often captures individuals who make relatively simple errors online, rather than those who produce such material or directly abuse children.

Vala Afshar

CMO and Chief Customer Officer, Enterasys Networks

Given the rise of tuitions, can technology like massively open online courses (MOOCs) reduce tuition costs and make education more affordable? Many argue the answer is yes.