As your blog’s traffic grows, spammers will rush to your blog too and spam comments is a serious problem for all bloggers. You have to go through comments everyday and delete the spam comments, which is really a headache.
Today i have collected 15 most important wordpress plugins to help you fight spam. These plugins will help you by blocking spam bots to comment on your blog, by blocking trackback spams and to prevent spam harvesters from collecting email address from your posts.
Akismet checks your comments against the Akismet web service to see if they look like spam or not and lets you review the spam it catches under your blog’s “Comments” admin screen.
2. TanTanNoodles Simple Spam Filter
A simple pre-filter to weed out the most obvious comment spam (about 90% of all spam).
The AVH First Defense Against Spam plugin gives you the ability to block spammers before any content is served. Spammers are identified by checking if the visitors IP exists in a database served by stopforumspam.com.
This plugin schedules a daily event using wp_cron that deletes all comments marked “spam” in the database, then optimizes the database.
This plugin automatically scatters invisible links to Project Honey Pot spam traps throughout your wordpress blog to help catch and stop spammers.
Simple Trackback Validation Plugin for WordPress 2.x performs simple but very effective tests on all incoming trackbacks in order to stop trackback spam.
Download Simple Trackback Validation Plugin
9. Simple CAPTCHA
A CAPTCHA for your comment system to prevent unwanted spams. Prevent automated spams by bots and most important naughty peoples. It’s simple and yet secure.
Math Comment Spam Protection asks the visitor making the comment to answer a simple math question. This is intended to prove that the visitor is a human being and not a spam robot.
Download Math Comment Spam Protection Plugin
11. WP Spam Hitman
WP Spam Hitman is based on set of rules and concept of hitpoint. With right set of rules and hitpoint level you can eliminate most or even all of the spam on you blog.
12. Email Protect
Automatically changes email address is posts, pages, and comments into safe alternatives (such as an image) to prevent spam harvesters from collecting them.
13. Raven’s Antispam
Raven’s antispam is a WordPress plugin, powerful and invisible fighter against comment spam.
14. Bad Behavior
Bad Behavior complements other link spam solutions by acting as a gatekeeper, preventing spammers from ever delivering their junk, and in many cases, from ever reading your site in the first place.
This plugin will notify commenters when their comments are caught as spam or put in the moderation queue.