vFlyer is a pretty cool way to set up a universal classified advert which you can use on any of the major sales and auction sites or even offline. You register for free, login and create your ad in any of a number of categories from cars, to houses, to electronics etc and then select a template. Press the publish button and voila, you’ve got an ad you can use on eBay, Craigslist or print out as a PDF and stick on the tree outside your house. The company doesn’t appear to be worried about getting money from customers as yet, so it might be a short lived exercise, but a neat idea well executed nonetheless.