Larry Tabb, founder of the financial technology research firm, TABB Group, has in the past made two key points related to high-frequency trading.

FORBES: High Frequency Traders -- Cost Reducers or Criminals?

He was then an entrepreneur, a founder of Business Signatures and founding chief technology officer of Webvan Group, both of which were sold.

FORBES: Exclusive: YouWeb, Billion-Dollar Incubator?

The international health group Program for Appropriate Technology in Health, funded by Microsoft founder Bill Gates , recently launched a five-year drive to get cervical cancer vaccines to poor countries.

FORBES: Magazine Article

We speak to the founder and principal players of comedy performance art group Improv Everywhere about the role technology has played in the rise of the group and some of its most famous (and infamous) pranks.

ENGADGET: The Engadget Show 36: John Hodgman, iPhone 5, Improv Everywhere, Samsara and the New Museum