GoGoPin Ad is an online classified ad and flyer creator based on Silverlight. You can create unique and attractive ads really fast by using simple drag and drop interface. You can add unlimited photos, text, speech bubbles, and other elements to the canvas to design your ads. You can also use your cell phones to add photos directly to the canvas. Finally, you can download the ad or flyer you have created in the format of your choice (HTML, JPEG, and PDF) and post them to Craigslist or eBay.
And it's completely free.