It's turning into an epic battle of wills and words over a series of articles on evidence of water contamination by a gas drilling process known as hydraulic fracturing. Instead of hashing out the complex pro-energy and pro-environmental positions on the issue, the Independence Institute's Dave Kopel, and Abrahm Lustgarten of the nonprofit investigative journalism outlet ProPublica have treated readers to pissing matches over what "anecdotal" means. Meanwhile, online commenters have tapped into their worst instincts — blaming the messenger.