Best Wordpress Spam Protection

Dashboard: Latest Spam is a WP plugin that introduces a widgetized dashboard featuring the latest comments or WP news. This plugin creates a widget that list the latest spam.

TanTanNoodles Simple Spam Filter plugin helps users filter spam comments before it is being approved. It detects obvious comment spam before it is being processed.

NoSpamNX is a WordPress plugin capable of protecting your blog from spam generated by spam robots. Other ancestors of this plugin are also capable of doing the same task but there’s a little difference in terms of compatibility.

Comment E-Mail Verification is a WordPress Plugin. It sends an e-mail message to the comment author when a comment is held for moderation. The e-mail message contains a link to verify the comment author’s e-mail address. When the comment author clicks on that link the comment gets approved immediately. This makes discussions more lively as users don’t have to wait for the blog admin to approve the comment.

Adds CAPTCHA anti-spam methods to WordPress on the comment form, registration form, login, or all. In order to post comments or regiser, users will have to type in the phrase shown on the image. This prevents spam from automated bots. Adds security. Works great with Akismet. Also is fully WPMU and BuddyPress compatible.