There's "a line between rhetorical hyperbole and defamation."

Said the court that let the climate scientist Michael Mann — he of the "hockey stick" — to continue with his lawsuit against the National Review. 

The court...  pointed to terminology such as “whitewashed,” “intellectually bogus,” “ringmaster of the [tree]-ring circus” and “cover-up” as “more than rhetorical hyperbole.”

The linked article miscorrects the joke "tree-ring circus" to "three-ring circus." Here's the blog post  that drove Mann to file a lawsuit — Mark Steyn calling attention to some football-and-hockey bad-taste humor.

"Americans are overly deferential to bureaucracy, but, in my observation, they are uniquely fearful of the state’s tax collectors..."

Mark Steyn writes:

I am an immigrant to this great land, and I love it, but I will make a small observation from my years in the United States which I hope won’t be taken the wrong way: Like citizens of almost all Western democracies in the 21st century, Americans are overly deferential to bureaucracy, but, in my observation, they are uniquely fearful of the state’s tax collectors to a degree I have never seen with Her Majesty’s Revenue & Customs in London or equivalent agencies in Paris, Ottawa, Rome, Canberra. The IRS has, in American terms, extraordinary powers.... Americans are fearless if some guy pulls some stunt in a shopping mall, but an IRS assault is brutal and unending. Many activists faded away, and the media began writing stories about how the Tea Party had peaked; they were over; they wouldn’t be a factor in 2012. And so it proved.... [T]he plan worked.

"Right Wing News emailed more than 204 right-of-center bloggers and asked them to rate 75 prominent people on the Right."

"51 of them responded."

I responded to this poll, even though I didn't like that the middle category — between "admire"/"greatly admire" and "dislike"/"greatly dislike" — was "no opinion." I was forced to check "no opinion" for a lot of people that I had an opinion about. My opinion was I'm in the middle. (But then, am I "right-of-center"?)

By the way, the most admired person was Clarence Thomas, followed by (tie) Thomas Sowell and Mark Steyn. The least admired is Megan McCain.

"Net Numbers (Positive - Negative) For 2016 Presidential Contenders":

12) Chris Christie (-11)
11) Jeb Bush (4)
10) Marco Rubio (21)
9) Jan Brewer (25)
8) Condi Rice (31)
7) Rick Perry (33)
6) Paul Ryan (37)
5) Sarah Palin (39)
3) Rand Paul (40)
3) Scott Walker (40)
2) Bobby Jindal (43)
1) Ted Cruz (45)