Daniel Burrus, 2/7/12

Technology Futurist, Keynote Speaker, Author

In fact, history is littered with companies that were the category leader and got displaced, even when they had full and total dominance. So although Facebook is very big and has dominance, its future is not guaranteed.

Melissa Richer, 2/7/12

Founder, Ayllu

Right now, social entrepreneurship is a hot trend and there are funders, conferences, university departments and newspaper sections devoted to it.

K. Sudhir, 2/6/12

Fellow, Yale Center for Customer Insights

The more a firm can flatten this hump, the more it will profit from customers who do not bleed the firm. So the question stands: when should a firm fire a customer?

Eric Shutt, 2/7/12

Social Media Pro with serious creative energy

Top commercials are now sending us straight to the company's Facebook Page, rather than their website -- for a chance at a Like, and a lasting connection with fans.

Robert Whent, 2/7/12

Entrepreneur in Residence, WEtech Alliance

I came home yesterday to copy hundreds of my recent wedding photos to my server and OMG! -- Nothing. No Lights. No Hum. Nothing. I got the dreaded "Server is not available" message and my heart sank.

Valerie Jarrett, 2/6/12

Senior Advisor and Assistant to the President for Intergovernmental Affairs and Public Engagement

Right now, if you're a woman in the workforce, it can be surprisingly difficult to answer basic questions about equal pay: what's the typical salary for someone in your position? Should you be asking for more at the negotiating table? What are your fundamental legal rights?

Eric Korpela, 2/6/12

Astronomer, Berkeley SETI

Your cell phone is very unlikely to cause a crash, but look at it from the FAA's perspective. There is a very, very small chance that the seven seconds it takes to turn off your phone and the 30 seconds it takes to turn it back on could save 300 lives.

Art Brodsky, 2/6/12

Communications Director, Public Knowledge

This is too important to hand over law making to one industry, as Congress did in the case of these bills. Too much is at stake to try to rework the bills in a slapdash manner, behind closed doors. That's the truth.

Vivian Weng, 2/6/12

Co-Founder, FashionStake

It's no secret that the relevancy of the American shopping mall has plummeted with the rise of e-commerce, but the question still remains: What will happen to the vacant shells that previously housed America's most beloved stores?

William K. Black, 2/6/12

Assoc. Professor, Univ. of Missouri, Kansas City; Sr. regulator during S&L debacle

Contrary to a recent screed by Rich Karlgaard, taxing corporations is not an "anti-business" policy, and all modern presidents have taxed corporations. A "tax holiday" is an extraordinary subsidy to corporations that already pay an exceptionally low effective income tax rate.

Kristian Ramos, 2/6/12

Policy Director,HIspanic Demographics, Immigration NDN

Broadband access for Hispanic could help provide a path forward for a community struggling under the weight of poverty, lack of educational opportunities and economic upheaval.

Max Kolonko, 2/5/12

New York television producer, director, author and the U.S. television correspondent

Facebook and the billionaire Mark Zuckerberg has joined the establishment. It has become another corporate giant which cheated us, luring on a concept of global friendship which has turned out to be lined with corporate greed.

Mac Hart, 5/2/12

18-year-old computer science major.

Once our government and the media industry realize that they need to compete with piracy rather than destroy it, they will overcome it.

Steve DeWarns, 2/6/12

Founder, Internet Child Safety

To help lower the risk, children should only communicate with people they know from the non-online. Predators can pretend to be someone they are not, (like another child) and may show up in places where children like to play online.

Jeff Reeves, 2/3/12

Financial journalist, Editor, InvestorPlace.com

Why not go the route of Wikipedia or Firefox or WordPress, digital creations that are open source and not-for-profit? Or why not stay a private company, turning a small profit but answering only to yourself?

Joel I. Klein, 2/3/12

CEO, Education Division, News Corporation

The Obama Administration's push for digital textbooks, while useful, represents only initial steps on the proverbial thousand mile journey.

Josh Levy, 2/3/12

Internet Campaign Director, Free Press

Arizona State University is going after free speech. If it gets away with this, other universities could be emboldened to follow suit. We must defend ASU students' right to speak online.