Jack Shafer writes the Press Box column for online magazine "Slate". Before joining "Slate", he was editor for two city weeklies, "Washington City Paper" and "SF Weekly". He is perhaps best known for his critical obituary of Walter Annenberg, titled "Citizen Annenberg - So long you rotten bastard". Much of Shafer's writing focuses on what he sees as a lack of precision and rigor in reporting by the mainstream media. Wikipedia
The definitive Wikipedia entry for Jack Shafer. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Jack_Shafer