很出名的WordPress 垃圾留言评论过滤插件。记得安装启用后需要先注册，然后获取激活码，输入激活码激活插件。
Akismet checks your comments and contact form submissions against our global database of spam to prevent your site from publishing malicious content. You can review the comment spam it catches on your blog’s “Comments” admin screen.
* Akismet Anti-Spam v4.1.5