White space has come to mean many things:
• WhiteSpace (Resource Scheduling), name used since 2002 to denote available time for People or Resources when scheduling time
• White space (visual arts), or negative space, the portions of a page left unmarked
• Whitespace (computer science), characters used to represent white space in text
• Whitespace (programming language), an esoteric programming language whose syntax consists only of spaces, tabs and newlines
• White space (telecommunications), unused radio frequencies in the VHF and UHF bands allocated to television transmission.
• White space (education), term used since 2007 in the Singapore Education System to denote time reserved for teachers' personal reflection and planning.
• White Spaces Coalition, a group of technology companies aiming to deliver broadband Internet access via unused analog television frequencies
• White Space (business), the part of a market or segment that is available to a business or entity for new sales or customers
• White Space (Process improvement and management), the area between the boxes in an organizational map, often an area where no one is responsible.
The common theme seems to be the notion of white space as a void, untapped and unused, free and clear - like powdered snow yet to be skied. If only we could find it (or get the government to give it to us as Google is seeking)!