These sites have different categorize according to the products and services. For instance car classifieds are the right way of selling old as well as new car of any model. A very short description that could also have an image or two is without any doubt very effective in luring more and more targeted audiences.
If compared to display advertising that lure the attention of readers more, classified ads are different. They are placed under specific heading according to the subject. If you want to put more information regarding sell, purchase or anything else, then there is no better way than classified ads.
However, before placing your classified ad, you should keep some facts in mind that are very essential for and effective ad. You should place your ad under the most appropriate and short heading. By doing so you can attract more and more customers to your business. You should try to make it as short as possible; however it should be very attractive. Apart from this, don't try to put different information in a ad; you should keep in mind that the classified should serve only one target.