You can pivot and develop your idea and/or execute in different ways. Why get horrified by an initial litmus test, instead of making continuous such tests while deciding on many parts of your offering. A startup is not simply a validation of your idea, it is a validation of your particular execution too.

>>Want to start a website matching up job seekers with employers? Start a blog with tips for finding a new job or new employees.

Just in time advice for me. I launched last week Jobrupt, a web site to help certain types of job seekers/recruiters when people are reserved to make the first step. I must immediately start blogging.