Advertising on Craigslist is a proven technique to increase search engine ranking results. Bottom line, the more ads you have Craigslist the more relevant you are on Google, Yahoo, MSN, etc.
Have you noticed how well Craigslist advertisements do in the Google search results? Well-written, substantial Craigslist ads tend to rank very highly in the SERPs (Search Engine Results Pages). There are two reasons for this, both directly related to search engine optimization:
Craigslist uses very simple HTML code, which means that if your post has at least 100 words, it will have a high content-to-code ratio. Producing web pages with a high content-to-code ratio is one of the fundamental principles of SEO copywriting;
A well-written, search-engine-optimized post of between 100 and 700 words on Craigslist is likely to appear on the first page of Google’s search results. This is amazing news, because it means that if your website is very young you can use Craigslist’s PageRank to start getting some traffic.
Craigslist is one of the most powerful marketing tools in the world today. Craigslist has 50 million users, 20 billion page-views monthly, and is the 7th most-viewed site on the Internet.