Original sentence: " This aspect of direct marketing involves an emphasis on trackable, measurable positive (but not negative) responses from consumers (known simply as "response" in the industry) regardless of medium.) with consumers or businesses.The term "Junk Mail", referring to unsolicited commercial ads delivered via post office or directly deposited in consumers' mail boxes, can be traced back to |1954.The term spam, meaning "unsolicited commercial email", can be traced back to |March 31st, 1993, although in its first few months it merely referred to inadvertently posting a message so many times on UseNet that the repetitions effectively drowned out the normal flow of conversation.This involves unsolicited commercial communication (spam, junk mail, etc
Edited sentence: " This aspect of direct marketing involves an emphasis on trackable, measurable results (known as "response" in the industry) regardless of medium.Recently, political campaigns have begun to appropriate the methods of direct marketers (or to employ direct marketing firms) to raise money and foster activism.This involves unsolicited commercial communication with consumers or businesses