Skype is communications software whose purpose is to break down barriers to communication.

ENGADGET: Logitech launches TV Cam HD for living room video chats: built-in Skype, 720p, $200

It means focusing on removing barriers to effective communication.

FORBES: The Debate Continues: Do You Prefer Superstar Individuals or Effective Teams?

Increasingly, companies are turning to enterprise social networks to overcome information silos and communication barriers.

FORBES: Unlocking Passion Through Enterprise Social Networks

By understanding these barriers, it may be possible to identify ways to unblock communication and spark innovation about how to best use all kinds of data to help a business.

FORBES: Splunk's Godfrey Sullivan on Overcoming Barriers to Operational Intelligence

Women in many rural areas do not have structured local communication networks or access to information and knowledge, barriers that compound and enhance poverty.

UNESCO: Communication and Information