rect marketing industry to refer to junk mail, which may also be referred to as admail and may involUnpaid advertising (also called word of mouth advertising), can provide good exposure at minimal cosmately decrease the importance of advertising agencies by creating a niche for independent freelanceon needed] This is partly due to laws in the United States and elsewhere which make it illegal.[citaWhile advertising can be seen as necessary for economic growth, it is not without social costs. Unsobudgets online, it is now overtaking radio in terms of market share.[3] In the music industry, many . This was so because the first radio stations were established by radio equipment manufacturers and
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