Jobpress is a very special theme from web2feel. I am very proud of it. I wanted to create a free Job board based on wordpress. I was not very sure of getting this done as a complete solution when I started. But what can I say, the WordPress community is so awesome, help is just a mouse click away when you need it. With this theme you can host your own Job board for free. Registered users can submit job listings on your site and an admin can review and publish it. This theme is WordPress 3 ready with features like Custom menu, custom post types, custom taxonomies, Custom page templates, widgetized sidebar, and it includes 2 custom widgets and theme option page . I have made two screencasts to explain the job listing process.
How to Create a Job submit form Page
How to Submit Job listings