Buy Nothing Day (BND) is an international day of protest against consumerism observed by social activists. Typically celebrated the Friday after American Thanksgiving in North America and the following day internationally, in 2009 the dates are November 27 and 28 respectively. It was founded by Vancouver artist Ted Dave and subsequently promoted by Adbusters magazine, based in Canada.
The first Buy Nothing Day was organized in Vancouver in September 1992 “as a day for society to examine the issue of over-consumption.” In 1997, it was moved to the Friday after American Thanksgiving, also called “Black Friday”, which is one of the 10 busiest shopping days in the United States. Outside North America and Israel, Buy Nothing Day is the following Saturday. Adbusters faced censorship from major television networks and CNN was the only one to air their ads. Soon, campaigns started appearing in United States, the United Kingdom, Israel, Austria, Germany, New Zealand, Japan, the Netherlands, France, and Norway. Participation now includes more than 65 nations.
(Information taken directly from www.wikipedia.org)