1. You can choose how many ads you wish to display on the homepage, based on your WordPress settings. The demo only has 8 ads listed, and the default WordPress number is to show 10, but say if it was set to 5, then you would start to see pagination occur.
2. You can certainly choose to have free ad listing if you wish yes.
3. Just some of the features I am aware of:
Job packs feature (i.e. you can create your own ad packs)
Built in contact form
"
Indeed" integration
Salary Field
Job Tagging
Advertising spaces
reCaptcha for new user registration