i am currently searching and have been looking on monster, dice, and washingtonpost ... i typically get like 3-4 calls a week, but only a handful of them have gone onto full fledge interviews. i actually have 2 or 3 w/in the next few weeks.
but i have definitely had a lot of "success" i'd say with atleast getting on the phone w/these companies.
as far as the actual salary question, if it's a "career" type job, I would not email and ask them salary at first. in a career field, typically the experience will earn you the pay you deserve. however if you have been looking for a while and have been disappointed by going through the process of talking to the employer and getting to interviews, only to find out they are going to pay you less than you want, then i would just be straight up and tell them you dont want to waste anyone's time and want to know how much $ they are willing to offer.