Classified as advertisements that allow people to list ads of items or services available for sale. They are called classified because these ads are broken into groups by topic so you can find cars for sale without searching through the help wanted ads. Learn how to write an effective classified ad, where to place these ads for free or paid publication, what to sell and how to buy effectively through classifieds. Learn about the history of classified advertising and get data and statistics about what sells and what doesn't sell thorugh classifieds. Learn all about classifieds right here at these websites.