Advertisements in a paper are normally brief, as they are charged for by the line or word, and are one paper column wide.
Publications printing news or other information frequently have actually areas of categorized ads; there are likewise publications that contain only ads. The advertisements are grouped into classifications or classes such as "for sale-- telephones", "wanted-- cooking area appliances", and "services-- plumbing", hence the term "categorized". Categorized advertisements typically fall into two types: people marketing sales of their individual items, and ads by regional businesses. Some companies use classified ads to employ new workers.
One problem with newspaper classified advertising is that it does not enable images, although screen ads, which do enable images, can be found in the classified section.
Over the last few years the term "classified advertising" or "categorized advertisements" has actually expanded from merely the sense of print advertisements in periodicals to consist of comparable kinds of advertising on computer services, radio, and even television, especially cable tv however periodically broadcast tv also, with the latter happening generally very early in the early morning hours.
Like the majority of kinds of printed media, the classified advertisement has found its method to the Web, as newspapers have taken their categorized advertisements online and new groups have actually found the benefits of categorized marketing.
Internet categorized advertisements do not generally utilize per-line prices designs, so they tend to be longer. They are also searchable, unlike printed product, tend to be local, [citation required] and may foster a higher sense of seriousness as a result of their day-to-day structure and larger scope for audiences. Since of their self-regulatory nature and low expense structures, some business offer complimentary classifieds globally. Other companies focus generally on their local home town region, while others blanket city areas by using postcodes. Craigslist.org was one of the very first online classified sites, and has grown to become the biggest classified source, bringing in over 14 million special visitors a month according to Comscore Media Metrix.  A growing variety of sites and business have started to provide specific classified marketplaces online, accommodating niche market products and services, such consist of boats, pianos, pets, and adult services, among others. In many cases, these specialized services offer much better and more targeted search capabilities than basic search engines or general classified services can supply.
A number of online services called aggregators crawl and aggregate classifieds from sources such as blogs and RSS feeds, rather than relying on manually sent listings.
Additionally, other companies offer online marketing services and tools to assist members in developing online advertisements utilizing professional ad design templates and after that automatically distributing the completed advertisements to the numerous online ad directories as part of their service. In this sense these more info companies function as both an application service provider and a content delivery platform. Social classifieds is a growing niche.
In 2003 the marketplace for categorized advertisements in the United States was $15.9 billion (papers), $14.1 billion (online) according to market researcher Classified Intelligence. The worldwide market for classified ads in 2003 was estimated at over $100 billion. Possibly due to the absence of a requirement for reporting, market data differ concerning the total market for internet classified ads. The Kelsey Research Group listed online classified ads as being worth $13.3 billion,  while Jupiter Research provided a conservative appraisal of $2.6 billion as of 2005  and the Interactive Advertising Bureau noted the net worth of online classified revenue at $2.1 billion as of April 2006.
Paper's revenue from classifieds ads is reducing continuously as web classifieds grow. Classified marketing at some of the larger newspaper chains came by 14% to 20% in 2007, while traffic to categorized websites grew by 23%.
As the online categorized marketing sector establishes, there is an increasing emphasis toward specialization. Vertical markets for classifieds are establishing rapidly in addition to the basic marketplace for classifieds websites. Like search engines, categorized sites are frequently specialized, with sites providing advertising platforms for specific niche markets of purchasers or sellers.