Hi Joe, it's understandable that you probably receive a lot of emails from these posts, but you guys should make an effort to at least reply to them. Else these job threads become a place of just spam.
I made the mistake of posting here once (It was in the seeking freelancer, but close enough) and received hundreds of contacts. As a solo entrepreneur it was just impossible to reply to them all. I found it somewhat disheartening actually because like you I do think they deserved a reply.