Classified ads are a unique and innovative way to advertise, as opposed to conventional advertising, and are an essential medium for those who cannot afford the astronomical costs of more traditional forms of advertising. You can see classified advertising in newspapers, online and other periodicals, where often, pages are devoted just for the purpose of these ads. The greatest advantage of classified ads is that anyone is allowed to advertise via this medium, as opposed to the other types of advertising, where only companies or business can advertise. That means that anyone wanting to sell even a household item like a used car, beanbag or electronics can do so at minimum expense.