Dr. Win Corduan responds to this site (which probably appears to many as a credible source).
I’ve enjoyed a couple of Dr. Corduan’s books, in particular this one.
Corduan continues: part 2, part 3, part 4, part 5, part 6, part 7, part 8, part 9, part 10. (Whew!)
Seems that he’s finished a new edition of the book I mention above – cool!
Update: new interview with Dr. Corduan: Are all religions the same?