Sergey Biryukov

Checks via Google Search if the comment being left is a common spam comment.
Inspired by <a href="http://alexking.org/projects/wordpress" rel="nofollow ugc">Delink Comment Author</a> plugin from Alex King.

Unique Comments

Checks via Google Search if the comment being left is a common spam comment.

Allows to receive e-mail messages in character sets different from the blog charset.
Based on the original plugin by Anton Skorobogatov, the founder of Russian WordPress community.

wp_mail Cyrillic

Allows to receive e-mail messages in character sets different from the blog charset.

Unique Comments vs wp_mail Cyrillic