* I was looking for jobs and I quickly figured out that you need drop your resume as soon as the job is posted to get at least a chance of a callback from a recruiter

* I scan 30k job sites and give fresh jobs within hours form posting

* Ended up with 300k jobs scanned in a few months

* 300+ users so far and it's 100% free. It does cost me money to run, not sure I would ever monetize though.