SN-10038 附来源、原文与上下文。
引用的来信Hal Finney来源 ↗引用的来信Jonathan Thornburg来源 ↗
- 垃圾邮件发送者的僵尸网络可以轻而易举地突破按次付费发送的邮件过滤器
- Spammer botnets could burn through pay-per-send email filters trivially
如果工作量证明代币真的有用，尤其是成为货币，机器就不会再闲着。用户会期望电脑替自己赚钱（假设收入高于运行成本）。如果一台电脑的收益被僵尸网络偷走，主人会比现在更容易注意到，所以我们可以预期，在那样的世界里，用户会更努力地维护电脑，清除僵尸网络的感染。
If POW tokens do become useful, and especially if they become money, machines will no longer sit idle. Users will expect their computers to be earning them money (assuming the reward is greater than the cost to operate). A computer whose earnings are being stolen by a botnet will be more noticeable to its owner than is the case today, hence we might expect that in that world, users will work harder to maintain their computers and clean them of botnet infestations.
如果工作量证明代币有价值，还有一个因素会减少垃圾邮件：人们会有逐利动机，建立大量虚假邮箱，从垃圾邮件中收集工作量证明代币。实质上，他们是在反过来向垃圾邮件发送者发送垃圾邮件，使用自动邮箱收集对方的工作量证明，却不读消息。虚假邮箱与真人的比例可能变得太高，以至于发送垃圾邮件不再划算。
Another factor that would mitigate spam if POW tokens have value: there would be a profit motive for people to set up massive quantities of fake e-mail accounts to harvest POW tokens from spam. They'd essentially be reverse-spamming the spammers with automated mailboxes that collect their POW and don't read the message. The ratio of fake mailboxes to real people could become too high for spam to be cost effective.
这个过程本身就有可能最初确立工作量证明代币的价值，因为没有僵尸网络的垃圾邮件发送者，可以向收集者购买代币。虽然回购会暂时让更多垃圾邮件通过，但它只会加快这种适得其反的循环，最终让太多收集者从垃圾邮件发送者身上获利。
The process has the potential to establish the POW token's value in the first place, since spammers that don't have a botnet could buy tokens from harvesters. While the buying back would temporarily let more spam through, it would only hasten the self-defeating cycle leading to too many harvesters exploiting the spammers.
有趣的是，一个 e-gold 系统已经有一种叫作“撒尘”的垃圾信息。发送者转出一点点金粉，好在交易备注栏中放入垃圾信息。如果系统允许用户设置愿意接收的最低付款金额，或者至少设置能够附带消息的最低金额，用户就可以设定，收多少钱才愿意接收垃圾邮件。
Interestingly, one of the e-gold systems already has a form of spam called "dusting". Spammers send a tiny amount of gold dust in order to put a spam message in the transaction's comment field. If the system let users configure the minimum payment they're willing to receive, or at least the minimum that can have a message with it, users could set how much they're willing to get paid to receive spam.
Satoshi Nakamoto
Satoshi Nakamoto
