1)
Specify what your job opening is about. Job description has to give job seeker good idea about what he/she will have to do.
Good examples:
Registered nurse,
Software developer.
Bad examples: "Work at home" and "Contact us to find out what the job is about".
2)
Include keywords that would help job seeker find your job posting.
Good examples:
clerical,
marketing,
sales,
accounting,
SQL,
driver,
manager,
nurse,
human resources.
3)
Avoid duplicates. Job seekers don't like to see lots of duplicates of the same job opening. So, job search sites delete or hide such duplicates.
If you have more than one job opening -- go ahead and post all of them, but please, don't post duplicates.
4)
Don't ask for money from job seekers. You have to pay for job to your employee/contractor, not the other way around.
If you're asking for money -- you are not offering a job -- you are selling merchandise.
Please, go someplace else with such offering.