Hello! I am a professional programmer with over 7 years of web scraping experience using Python. I have read your project description, and I can create Craigslist Auto Ad Poster you require. To do so, I will use the libraries Mechanize (for web automation tools), BeautifulSoup (for parsing html), and Selenium (for working with AJAX and/or Javascript, if necessary). I have written very similar programs in the past, and I would be happy to show examples. Please contact me so we may speak further and so I can send files. Thank you for your consideration.