SN-10039 附来源、原文与上下文。
Hal Finney 写道：
Hal Finney wrote:
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易突破按发送付费的邮件过滤器
- Spammer botnets could burn through pay-per-send email filters trivially
如果工作量证明代币真的变得有用，尤其是变成货币，机器就不会再闲置。用户会期望自己的电脑为自己赚钱（假设收益高于运行成本）。一台收益被僵尸网络窃取的电脑，会比今天更容易引起主人的注意，因此我们可以预期，在那样的世界里，用户会更加努力地维护电脑，清除僵尸网络感染。
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，还有一个因素可以缓解垃圾邮件问题：利润会驱使人们建立海量虚假邮箱，从垃圾邮件中收集工作量证明代币。他们实质上是在反过来向垃圾邮件发送者“发垃圾邮件”：用自动邮箱收取对方的工作量证明，却不读消息。虚假邮箱与真实用户的比例可能高到让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先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从收集者那里购买代币。虽然回购会暂时让更多垃圾邮件通过，但只会加速这个自我挫败的循环，最终让过多的收集者来占垃圾邮件发送者的便宜。
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 系统已经出现了一种叫“撒尘”的垃圾信息。发送者转出极少量金粉，以便在交易备注栏里加入垃圾信息。如果系统允许用户设置愿意接收的最低付款额，或者至少设置能够附带消息的最低金额，用户就可以决定自己愿意收多少钱来接收垃圾信息。
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
