Get your own classified board on your website - try out Edgeio’s Marketplaces in beta.  Keith explains,

The idea of allowing any web site to create a free classifieds board, and to take listings into it - either in return for a fee or for free - is core to the first marketplaces product - Classifieds Boards. Theoretically this should make it possible for web sites to do what newspapers and magazines have done for hundreds of years - make revenue from classified listings alongside their revenue for advertising.

Check it out at http://marketplaces.edgeio.com. I have placed a job board on earningscast - too me 5 minutes - at http://jobs.earningscast.com.