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www.infoq.com/...designing-for-spam - Cached
This link has been bookmarked by 1 people . It was first bookmarked on 30 Jun 2008, by cloud chen.
每则Spam消息都会加入一些随机的文字，愚弄Craigslist的重复消息检查。通过IP代理网站发帖，使IP地址分布到一个很广的范围。回复用的 E-mail地址是通过Jiffy Gmail Creator创建的大量Gmail帐号。[……]用OCR系统识别CAPTCHA中的模糊文字。自动监控哪些Spam被作了标记，一发现被标记就重发。
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