dika283

This plugin’s function is to check the IP address of the comment sender, gravatar, comment content.
How this plugin works : 1. Getting IP blacklist from stopforumspam.org This step determines the IP is a spammer or not by checking the IP on http://api.stopforumspam.org/api?ip=(the IP sender) using curl. The result will be appear on the form of .txt Non spammer IP will be marked by “no”
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Validating the gravatar Access https://secure.gravatar.com/avatar/(encoded email) Later,you can get the data of the registered email by using curl.
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Validating the comment content Create hook on ‘wp_blacklist_check’ to check if the content of the comment contains the word listed on the Comment Blacklist on wp-admin Comment Blacklist is stored on Beon Intermedia’s server that is copied on the user’s wp-admin. User can add and delete the keyword listed on Comment Blacklist from wp-admin. Meanwhile, user can see only the keyword of Comment Blacklist on http://db1.andhikamw.com/ The updated Comment Blacklist keyword is shown on the column ‘update_secure_discussion’ of wp-option table
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After the comment is submitted, the plugin will determine whether the comment is a spammer or not from its IP , gravatar and comment content. Next, this plugin will change automatically the status into approve, moderation, or spam. However, the user can change the default status by himself on wp-admin (sub menu ‘Beon Comment Option’) as shown on Screenshot_2.png At the end, the plugin will force the default status (generated by the plugin) into the same setting of the wp-admin (managed by user) by using hook ‘pre_comment_approved’

Beon Comment Protection

Detect the comment which potentially recognized as spam

MikesPickz

MP Spam Be Gone is the simplest, most effective Spam blocker without difficult CAPTCHA responses needed by the user. This plugin was inspired by some of the best Anti-Spam plugins available on WordPress.
Inspirations: 
Spam Free WordPress by Todd Lahman, LLC 
Growmap Anti Spambot Plugin by Andy Bailey 
Simple Trackback Validation with Topsy Blocker by Tobias Koelligan
This plugin has aspects from all of the above mentioned plugins to form the most complete and dead simple Anti Spam plugin on WordPress. This plugin doesn’t write anything to your database while preventing comment spam and trackback spam.
From Growmap Anti Spambot Plugin, I used the concept of having a checkbox display to the user in order to prevent automated Spam. To me this is the best way (and least intrusive) to completely prevent automated spam from ever even being written to the database in the spam que. It is physically impossible to get a false positive, since you either checked the button or not. The flaw with this plugin is that it does not work with Javascript disabled.
To combat that flaw, I use the copy and paste password fields from the Spam Free WordPress plugin. These fields are in a <code><noscript></code> tag, and only appear if Javascript is disabled. Unlike, the Spam Free WordPress plugin, these passwords are generated on the fly and never stored in the database.
These plugins primarily stop comment spam. In order to stop trackback spam, I added the IP address check, URL check, and Topsy check functions from Simple Trackback Validation with Topsy Blocker. If a trackback is identified as spam because of the IP address or Topsy, it is deleted and never written to the database. If a trackback is identified as spam because of the URL, it is marked as spam and sent to the Spam que. The reason that these are not automatically deleted, is because it is possible that the referring page is using a shortlink and therefore the full URL would not appear on the page in the first place.
When combined, this plugin will stop all automated spam and trackbacks.
It is intended to replace the above plugins.
You can’t find a plugin simpler than this – set it and forget it. No options = no modifications to the database.

MP Spam Be Gone

MP Spam Be Gone is the simplest, most effective Spam blocker.

Beon Comment Protection vs MP Spam Be Gone