Meevy

Akismet - WordPress comes with Akismet plugin. Akismet identifies comments that contain certain words that spammers use often. Also when there is two or more links in a comment it is marked as spam. Thus spam comments are easily identified. Such comments are displayed in a separate tab called spam under the WordPress Admin interface. All the comments marked as spam will stay in the WordPress Admin for 30 days. After 30 days all spam comments identified as spam will be deleted automatically. On rare occasions a genuine comment might be marked as spam. To prevent this we need to check periodically if there is any genuine comment marked as spam.

JSSpam Block – More than 90% of people use their browsers with JavaScript enabled. These people won’t see any difference in the comment posting form. It is believed that bots post spam comments without even executing the JavaScript in the pages. They simply use the wp-comments-post.php. So whenever a comment is posted with JavaScript disabled it requires the user to copy paste a number. This will filter out the spam bots at the same time normal people won’t see any difference.

Though this blog receives only a few comments, spam comments amounted to more than 500. Then I installed and activated the above two comment plugins to find that spam was almost zero.