[ChuckMcM]

Hired.com does a good job of this, you look at candidates on the board (as a potential employer) and you put in what you think you would pay that candidate. They can decide if they want to interview for the job or not. As an employer nice bit is that you already know that they would already consider working for you at that salary. For the candidate they can see multiple 'bids' from different companies and get a sense of the market and also see if their own expectations are under valued or over valued.