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Chinese Comment Spam Protection asks the visitor making the comment to key in/copy a simple chinese word. This is intended to prove that the visitor is a human being but a spam robot.
Example: 成长？路 请输入“之”字
This plugin does not require JavaScript or cookies. The result of the question is being passed via a hidden field. The result is being compared with the value entered by the visitor.
Please visit <a href="http://iibetter.com/12198.html" title="Chinese Comment Spam Protection" rel="nofollow ugc">the official website</a> for further details and the latest information on this plugin.

Chinese Comment Spam Protection

Asks the visitor making the comment to key in the disappeared chinese word. This is intended to prove that the visitor is a human being but a spam rob …

overtrue

WordPress高级摘要插件。支持在后台设置摘要长度，摘要最后的显示字符，以及允许哪些html标记在摘要中显示。
<ul>
<li>在摘要中支持HTML标签的显示；</li>
<li>自动裁剪的摘要功能；</li>
<li>优化算法，让截取结果更易读；</li>
<li>可以自己定制摘要的长度和省略号的显示；</li>
<li>“阅读全文” 标签会被自动的添加（可选）；</li>
<li>摘要长度是真实的内容的长度（不包含HTML标签）；</li>
<li>主题开发者可以使用the_advanced_excerpt()方法进行更多的控制。</li>
<li>这个插件可以完美的支持自动中文摘要，而且不局限于生成中文摘要，所有的UNICODE字符都支持。</li>
</ul>
<h4>设置:</h4>
“控制面板” > “中文摘要设置”

WP CN Excerpt

WordPress高级摘要插件。支持在后台设置摘要长度，摘要最后的显示字符，以及允许哪些html标记在摘要中显示。

Chinese Comment Spam Protection vs WP CN Excerpt