Post ads that are only geographically relevant to your area. Posting ads that are equally relevant to different regions are not appropriate for Craigslist.
Post ads in the most relevant category. For example, advertise a training seminar in the “Classes” section, not in the “Jobs” category.
Ensure your HTML code is clean and well-written, without missing characters or too many characters.
Use small- to medium-sized images rather than large images that eat bandwidth and take time to download.
Use proper punctuation, without excessive punctuation marks or symbols like “@,” “*,” “&” and “/.”
Use another service other than Craigslist to promote any affiliate marketing program. Affiliate marketing is prohibited on Craigslist.