趣谈网络协议（二十七）：第26讲 | 云中的网络安全：虽然不是土豪，也需要基本安全和保障

Downvoting a post can decrease pending rewards and make it less visible. Common reasons:

• Disagreement on rewards
• Fraud or plagiarism
• Hate speech or trolling
• Miscategorized content or spam