1) In the subject line of the post, state a brief general title or skill that you have to to offer followed by your city and state (For example: Electronics Repair Technician - San Diego, CA).
2) Be thorough in the body of your post, stating specifically what skills or attributes you have to offer.
3) At the end of your post, state your real name (not a nickname/username--an employer may not want to call/email asking for a "J-willy").
4) Provide a reliable method of contact.
5) Make sure the job posting abides by the posted general forum rules.