Duplicating and Copying Jobs:
You may duplicate a job listing at anytime through the "My Jobs" category. Jobs that are duplicated are displayed for 4 months. You will be allowed to edit the new (duplicate) posting to change any details you wish. A "Renewed" job does not change any details. A dupllicate job counts against your total allowed job postings.
There is also a "Multi Renew" function to make renewing multiple jobs easy.