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A chain letter is a letter, often with a promise of money, that is sent to several people who send copies on to several more people. Chain letters are illegal in some countries. (在某些国家是非法的)连环信; 一种通常带有金钱方面许诺的信，收信人需要将其再寄给更多的人
The consumer groups involved in the exercise each spent three hours scouring the internet for bogus homeworking schemes, business opportunities, lotteries, chainletters and pyramid investment plans - known as cyber-scams.