From what I gather the jobs are real. They are not "new" jobs, they are just the same ones from yesterday re-listed.
When you go to a job site the positions are usually listed according to the most recent to the oldest. Therefore, if you don't re-list everyday your job goes down the list to where most folks don't look.
I, like many of us, have spent way too much time on those sites recently. In hindsight I should have anticipated my position and started looking months ago when things weren't as tight and an experienced captain could get a job without a bus or a boeing type rating. Oh well, live and learn.
Jim