craigslist ad poster

I need someone who knows about posting to craigslist, every morning for my business (US eastern time) for five days a week (Monday through Friday). I'm looking for pay-per-ad rates, with no more than 15-20 ads per day; In addition, two days a week I will need five to seven ads placed in the evening in areas of my choosing. Eventually we will work on other sites beyond craigslist, although I'm not versed on any others, if you know of them that would be helpful. This will only take about a few hours a week. I am looking for someone potentially long term through October depending on how things go. My project budget will be for weekly payment, payment will be made on Sunday evening, preferably through pay pal and I will cover the pay pal fees. It will be paid per ad. No spamming, must come up with creative ways to get the information out.