Just a quick link here. Partially for my own later reference (as I don't have time to read the entire article at work), and partially because I know a handful of folks on my friends list will appreciate it.
Paganism and Polemic: The Debate over the Origins of Modern Pagan Witchcraft, by Ronald Hutton, in which the author responds directly to a 1998 Don Frew article apparently calling into question some of Hutton's own conclusions in Triumph of the Moon.
(Edit: Thanks to
kallistos for
posting the link!)