Earlier this month, fellow SFGate contributor Mark Morford featured a sort of "best of" hate-mail collection, proving that vitriol emanates from both sides of the political spectrum. It's a symptom of the Wild-West-frontier-like atmosphere of the Internet. Anything goes, and that's the beauty of it. As a right-leaning columnist in a left-leaning town, I've been the recipient of some rather colorful hate mail myself. And, over the years, I've been collecting and posting it at my Web site. The following is a sampling of these e-mails, presented in their original condition, but with profanity obscured, names omitted, and, in some...