YSK: If you receive a packet from the Nielsen Family, it’s not junk mail. Often times there’s 2-5 dollars of cash in the envelope. You can earn more by sending in logs of what TV shows you watch.
from /r/YouShouldKnow
YSK：如果你收到來自尼爾森家族的包裹，這不是垃圾郵件。很多時候，信封裏有2-5美元的現金。你可以通過寄來你所看的電視節目的記錄來賺取更多的錢。