OVERVIEW AND INSTRUCTIONS
Tired of all the useless and bloated WordPress spam plugins? The WordPress Zero Spam plugin makes blocking spam a cinch
WordPress Zero Spam blocks registration spam and spam in comments automatically without any additional config or setup. Just install, activate, and enjoy a spam-free site.

Zero Spam was initially built based on the work by David Walsh.

Major features in WordPress Zero Spam include:
– No captcha, spam isn’t a users’ problem
– No moderation queues, spam isn’t a administrators’ problem
– Blocks 99.9% of spam registrations & comments
– Supports caching plugins to help provide great performance
– Blocks spammy IPs from ever seeing your site
– Extend the plugin with action hooks
– Theme & plugin integration for any form on your site
– Optional logging, so you can see who’s trying to spam
– Advanced settings for complete control

Installation
Upload the zero-spam folder to the /wp-content/plugins/ directory
Activate the plugin through the ‘Plugins’ menu in WordPress