Since 2006, "Slate" has been known for publishing contrarian pieces arguing against commonly held views about a subject, giving rise to the #slatepitches Twitter hashtag in 2009. The "Columbia Journalism Review" has defined "Slate" pitches as "an idea that sounds wrong or counterintuitive proposed as though it were the tightest logic ever," and in explaining its success wrote "Readers want to click on Slate Pitches because they want to know what a writer could possibly say that would support their logic".