I'll bet a reasonable percentage of Harvard econ undergrads have a fair understanding of the CGHQ intertoobz, and do become aware of alternative interpretations "mainstream" shit.

Here's the txt version of google "Mankiw mainstream"

EconoSpeak: Mankiw's Reply to the Walk-Out
econospeak.blogspot.com/2011/12/mankiws-reply-to-walk-out.html‎
Dec 4, 2011 - That said, I think Mankiw fails to see two ways in which his introductory course, and other mainstream econ courses, impose a worldview that ...
Economist's View: "Mankiw's Reply to the Walk-Out"
economistsview.typepad.com/...12/mankiws-reply-to-the-walk-out.html‎
Dec 4, 2011 - That said, I think Mankiw fails to see two ways in which his introductory course, and other mainstream econ courses, impose a worldview that ...
Greg Mankiw's Blog
gregmankiw.blogspot.com‎
4 days ago - A sequence of observations on financial- and macro-economics.
Greg Mankiw's Blog: Galbraith on Mainstream Economics
gregmankiw.blogspot.com/...galbriath-on-mainstream-economics.html‎
Nov 3, 2008 - But there are at least 15,000 professional economists in this country, and you're saying only two or three of them foresaw the mortgage crisis?
Marglin and Mankiw | Jacobin
jacobinmag.com/2012/01/marglin-and-mankiw‎
Jan 20, 2012 - The point here is that this is a mainstream ideology, it's not Mankiw's ideology. Mankiw is perfectly right when he says that his text is a ...
Occupy Economics | Jacobin
jacobinmag.com/2011/12/occupy-econ/‎
On November 2, a group of Harvard students walked out on Greg Mankiw's intro ... he sees himself as following Samuelson's path, representing the mainstream.
anti-mankiw
anti-mankiw.blogspot.com/‎
Dec 22, 2012 - At various points during Anti-Mankiw's history we've devoted ourselves to a topic that is often completely ignored by the mainstream: institutions ...
anti-mankiw: Anti-Mankiw's Favorite Textbooks and Teaching Methods
anti-mankiw.blogspot.com/...anti-mankiws-favorite-textbooks-and.html‎
Nov 15, 2011 - We at Anti-Mankiw strongly disagree with Mankiw's reply. Mankiw's argument rests on the assumption that the building blocks of mainstream ...
Defending the indefensible | Michael Roberts Blog
thenextrecession.wordpress.com/2013/06/19/defending-the-indefensible‎
Jun 19, 2013 - He is also author of the most widely used textbook on economics by university undergraduates. So he could not be more 'mainstream'. Mankiw ...
Know What You're Protesting - Economic View - NYTimes.com
www.nytimes.com/2011/.../know-what-youre-protesting-economic-view.ht...
Dec 3, 2011 - N. Gregory Mankiw, an economics professor, has a message for students ... The course I teach is a broad survey of mainstream economics.

so the stoonts are likely aware that there is an anti-Mankiw website.

"Life shrinks or expands in proportion to one's courage." - Anaïs Nin