1. To clarify, the
JobRoller demo site is automatically logged in with an employer account which is why you can't see any options to post a resume. When logged in, the job seeker can post (not upload) resumes from within their customer dashboard options.
2. You can set in the JobRoller admin options whether or not resumes are displayed to everyone, job seekers/employers, employers only, or those who have paid to view resumes. You can't hide specific contact information though.
3. What kind of alert are you referring to? It's job seekers who have job alerts as they are the ones applying for jobs, not employers. Please feel free to clarify. Thanks.