Spam in turn is the basis for shady commercial promotions including schemes that frequently involve directing unwary users to Web sites that can plant malicious software, or malware, on computers.

• 轮流发送广告邮件是那些不可靠的商业促销的基本伎俩，邮件包括的规划频繁的诱导不小心的用户去浏览能向计算机移植恶意软件的网站。