出于这个原因，hashcash必须与其他的反垃圾信息技术联合使用。
For this reason, hashcash makes most sense in combination with other anti-spam techniques.
垃圾信息散布者的行为模式有很多，所以如今的一些反垃圾信息技术都在试图利用这些模式。
There are also broader patterns across almost all spammer activities, and some anti-spam techniques try to take advantage of these patterns.
最终的后果往往是Web发布者往往要在反垃圾信息方面浪费大量资源，并会占用处理其他任务的时间。
And the final injury is that Web publishers end up wasting resources on spam-fighting, taking time way from other tasks.
听起来，购买和使用一个反垃圾邮件程序可能是鼓噪无味的，但更糟糕的是，你不得不从大量的垃圾邮件中挑选一些有用的电子邮件信息。
While purchasing and using an anti-spam program may sound tedious, it's far worse to have to pick out a few desirable email messages from a pile of junk email.
听起来，购买和使用一个反垃圾邮件程序可能是鼓噪无味的，但更糟糕的是，你不得不从大量的垃圾邮件中挑选一些有用的电子邮件信息。
While purchasing and using an anti-spam program may sound tedious, it's far worse to have to pick out a few desirable email messages from a pile of junk email.
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