Postelets is an awesome website that allows you to create attractive looking flyers to post on website like craigslist, here is a link to one that i have created for one my brokers listings here in San Diego http://sandiego.craigslist.org/ssd/reb/2039106027.html
! Its really simple to create to! You just sign-up, click create new postlets, choose a template that suits you and all you have to do is ad the property info and pictures and you are all set! It gives you the html code to paste into craigslits and it will automatically send it to other websites like Trulia etc. You can also ad the flyer to your facebook!