You should have noted in your posting that $5 was just a place holder and that you were open to negotiation on a price for the job. That way it is clear and you are not asking a freelancer to be a mind reader.
Steve R wrote:
We posted a job offer which stated a "budget" of $5. Obviously, this was intended to keep our budget confidential until we select a freelancer for the job.
Did you make it really plain in your job post that the budget is a placeholder? As in saying "Ignore the $ 5 - it is a placeholder?"
(Long version: "Ignore the $ 5 - it is a placeholder and we expect you to waste your connects (which you pay money for) without having the faintest clue whether we would even dream of paying what you generally charge, hence potentially subjecting you (and us) to the kind of awkward (on both sides) conversation that usually happens when a client is told that the freelancer they are speaking to would charge 4 times what they are comfortable paying... ")
Do you consider it fair for freelancers to spend their Connects (which they now have to pay for) on "secret budget" job posts?
To answer your question:
You can go to the freelancer's profile and hit the "invite to job" button to get in touch with the freelancer.