Please read this infomation
http://www.oag.state.md.us/consumer/edge85.html
這是FTC的資料
http://www.ftc.gov/bcp/edu/pubs/consumer/products/pro03.pdf
http://www.oag.state.md.us/consumer/edge85.html
這是FTC的資料
http://www.ftc.gov/bcp/edu/pubs/consumer/products/pro03.pdf