Most of the stuff written about writing is pretty useless (another ten rules on writing by so and so, anyone?) trudging out the same trite copy (like rule number ten, forget about the rules) and blah, blah, blah. I also have mixed views on WritersDigest.com; they seem to bombard me with once-in-a-lifetime marketing opportunities every twenty seconds but once in a while some of their output is really good. Take this column. It offers more than 60 examples of successful query letters and a response from the agents about why the letters were so good. You can’t ask for more useful than that.