There really isn’t a great job board and Monster and CareerBuilder just don’t cut it.
Craig’s List job postings are actually $25.00 apiece but there still are a lot of crappy, low-end jobs and work-from-home spam.
Because of this gap in good sites, I had to go one at a time during my search. This involved scouring about 25 different org’s sites, at least three times a week. In the end, the job I found was one that I had just cold called by submitting my resume and explaining why I wanted to work for their company. I lucked out completely and got a really good job.
Sometimes, signing up for a professional organization associated with your work (Food Worker’s Union, Nurse’s Association, Programmers Anonymous) will connect you with their boards so you have a more direct crack at postings in your specific field.
This certainly doesn’t answer your question about good sites, but it lets you know that what they’re experiencing is kind of the state of things. I’d be interested to see if anyone else who responds has any good suggestions.