Do companiesmadesimple have any value-add?
While I do share your cynicism about recruiters, I have also got most of my contracts through them. There are bad recruiters (vague job descriptions, never call you back) and there are good ones (We need someone here, you fit the bill, can we arrange a time to talk to my client?).
Learning to swallow your distaste and listen to them as if they were worthwhile human beings is a useful skill. Some (few) of them actually are.
(--edit-- good guide in general! I don't just want to harp on the negatives!)