I agree--ppl should read "Ask the Headhunter"
It's certainly possible to get a job by replying to a posted opening & playing HR's game--I've done it myself. But, by far, my BEST gigs have come from personal contacts/networking with the manager who actually "needed the help". These "Best Gigs" were never even advertised! Also, having been the hiring manager myself on occasion, I can't say enough about "Ask the Headhunter" (book, column, & website). Even if you don't use all of Corcodilos' (sp?) methods, he has a unique perspective and some great advice.