Arefly

Disallow English Comments in Your Blog. (Full Support with AJAX Comments Too!)
在你的部落格中禁止英文評論（全面支持AJAX評論提示）
<h4>Translators</h4>
<ul>
<li>Chinese, Simplified (zh_CN) – <a href="http://www.arefly.com/" rel="nofollow ugc">Arefly</a></li>
<li>Chinese, Traditional (zh_TW) – <a href="http://www.arefly.com" rel="nofollow ugc">Arefly</a></li>
<li>English (en_US) – <a href="http://www.arefly.com" rel="nofollow ugc">Arefly</a></li>
</ul>
If you have created your own language pack, or have an update of an existing one, you can send <a href="https://codex.wordpress.org/Translating_WordPress" rel="nofollow ugc">gettext PO and MO files</a> to <a href="http://www.arefly.com/about/" rel="nofollow ugc">Arefly</a> so that I can bundle it into No English Comments. You can download the latest <a href="https://plugins.svn.wordpress.org/no-english-comments/trunk/lang/no-english-comments.pot" rel="nofollow ugc">POT file</a>.

No English Comments

Disallow English Comments in Your Blog. 在你的部落格中禁止英文評論

MoeHassan

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WP Email Guard protects your email addresses included on any post or page from being crawled by spammers.
It converts every email written within your post body into a JavaScript code, so the emails is readable and can be clicked by humans only.
Spammers can’t crawl JavaScript.

WP Email Guard

WP Email Guard protects your email addresses included on any post or page from being crawled by spammers.

No English Comments vs WP Email Guard