The author's state that:
"Since their beginnings in the 1930s with Gallup, Roper, Harris and others, scientific polling organizations have grown dramatically in number, scope, and stature to their worldwide presence today. This compilation focuses on significant Internet sites concerning general public opinion polls, especially those providing polling results in usable formats. Like other professions dealing with public affairs, pollsters have found the Internet to be a great boon both for advertising services and for offering survey results. Professional organizations, university research centers, and data archives all use the Web to enhance access to public opinion polls. Access to polls from other countries and multinational surveys has expanded greatly in the last few years as scientific polling becomes commonplace in more nations. Commercial polling organizations and publishers are putting electronic journals and searchable databases on the Web, with some information for free and some only available to registrants/subscribers. The compilers decided to exclude Internet sites that focus heavily on market research; consumer surveys; pollsters whose primary focus is political campaigns and elections; census and other governmental sites as well as historical treatments; and sites oriented towards polling methodology and training."
This posting courtesy of Gary Price's Resource Shelf http://www.resourceshelf.com.