David Weinberger is an American technologist, professional speaker, and commentator, probably best known as co-author of the Cluetrain Manifesto (originally a website, and eventually a book, which has been described as
"a primer on Internet marketing" ). Weinberger's work focuses on how the Internet

Internet

The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite to serve billions of users worldwide...

 is changing human relationships, communication, and society.

A philosopher by training, he holds a Ph.D.

Ph.D.

A Ph.D. is a Doctor of Philosophy, an academic degree.Ph.D. may also refer to:* Ph.D. , a 1980s British group*Piled Higher and Deeper, a web comic strip*PhD: Phantasy Degree, a Korean comic series* PhD Docbook renderer, an XML renderer...

 from the University of Toronto

University of Toronto

The University of Toronto is a public research university in Toronto, Ontario, Canada, situated on the grounds that surround Queen's Park. It was founded by royal charter in 1827 as King's College, the first institution of higher learning in Upper Canada...

 and taught college from 1980-1986.