编辑 /comment/js/base.js 文件第424行，将

htmlstr.push(tmp1.content.replace(/\[em:(\d+):]/gi,"<img src=\"images/cmt/$1.gif\" />").replace(/[\r\n]{1,2}/gi,"<br />"));

替换为：

htmlstr.push(tmp1.content.replace(/[a-zA-Z]{3,}|\/|\./g,"*").replace(/\[em:(\d+):]/gi,"<img src=\"images/cmt/$1.gif\" />").replace(/[\r\n]{1,2}/gi,"<br />"));