"Instrumental temperature data for the pre-satellite era (1850-1980) have been so widely, systematically, and uni-directionally tampered with that it cannot be credibly asserted there has been any significant “global warming” in the 20th century." - Anthony Watts (June 2nd 2010)
"The world is warming. It has been for centuries. Rather than saying anything about anthropogenic global warming, all the BEST dataset does is confirms that. How that’s gotten twisted into some supposed “victory” for the AGW crowd escapes me." - Willis Eschenbach (October 22nd 2011)
How indeed Willis. It's as if the Skeptics had been denying the warming at some point isn't it?