As part of an ambitious attempt to revive CBSNews.com with a broad array of free video news produced just for its Web site, CBS said today that it would also introduce a Web log to comment on CBS's newscasts, both online and on air.

To be written by Vaughn Ververs, who had been the editor of Hotline, a Web site covering politics, the new blog, called Public Eye, will assemble questions from viewers, criticism from blogs and other sources, and immediately bring in reactions from the CBS newsroom.