artesea

Whereas the built in moderation just looks for keywords wherever they appear in the comments, Better Moderation allows you to define if it should just be the username, url, email, comment, ip, useragent or all of them. 
It also allows you to define if when looking for “word” whether you should match “WordPress”. 
Finally it lets you set reasons why words have been added to the list, allowing you to quickly realise why a comment has been added to the moderation queue.

Better Moderation

Provides more control over comment moderation

johnh10

If your blog gets so many comments you tend to skim them during moderation, you can sometimes miss ‘manual spam’ or trollish comments. This plugin will highlight keywords you specify so certain remarks grab your attention for further review. It is useful for blogs that get numerous comments and the moderator tends to skim instead of reading each and every one.

Comment Moderation Highlighter

This plugin will highlight keywords you specify on the admin moderation page, making it easier to spot manual spam and/or troll comments.

Better Moderation vs Comment Moderation Highlighter