Upon activation, SpamLord eliminates the potential for automated spam comments, as well as trackback spam.

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WordPress plugin to fight with 500+ referrer spammers (like semalt, buttons-for-website and many more).

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Comment spam prevention without moderation, captchas or questions

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A1JSpamGuard is a simple and efficient WordPress plugin to block spam in comments, registration forms, and contact forms.

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Plugin to reject spam. Port from same author from http://www.phpbbantispam.com Actually visits the URL from commenter to spider for spamwords.

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This plugin protects your registration, login and comment forms against spambots with a simple math question.

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This antispam plugin provides very simple(one-click) and powerful captcha for your blog.

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A simple yet effective Spam Filter. A Widget and Shortcode to display Comments with Good Karma as Testimonials. Plus the ability to Move comments and …

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