WordPress Zero Spam Plugin Packages David Walsh’s Anti-Spam Method
http://wptavern.com/wordpress-zero-spam-plugin-packages-david-walshs-anti-spam-method

WordPress Zero Spam is the latest to join the ranks of anti-spam plugins fighting on the front lines of WordPress sites. The new plugin is based on a simple method created by Mozilla developer David Walsh, whose popular tech blog gets regularly hammered by 8,000+ spam comments per day.

WordPress Zero Spam is different from Akismet, the most often recommended spam blocking solution, in that it’s not a service dedicated to filtering spam. It simply checks for bots and discards spam comments at the door before they reach your site. The benefit here is that you are likely to have fewer spam comments and false positives to hunt through. Since it’s an open source plugin and not a service, WordPress Zero Spam is free for both personal and commercial use.

The downside of this new plugin is that anyone without support for JavaScript will have their comments rejected. However, the percentage of actual commenters with JS turned off is likely to be infinitesimal compared to the number of bots trying to comment on your site.

WordPress Zero Spam
https://wordpress.org/plugins/zero-spam/

Major features in WordPress Zero Spam include:

No captcha, because spam is not users’ problem
No moderation queues, because spam is not administrators’ problem
Blocks spam registrations & comments with the use of JavaScript
Contact Form 7 support if installed and activated
Gravity Form support if installed and activated
BuddyPress support if installed and activated
Supports caching plugins to help provide great performance
Blocks spammy IPs from ever seeing your site
Extend the plugin with action hooks
Optional logging, so you can see who’s trying to spam
Advanced settings for complete control

Comment spam and registration spam remain a large problem for WordPress users. It is not uncommon for some WordPress websites to receive hundreds or even thousands of comments every week.

This level of spam can damage your reputation with readers and commentators if you fail to tackle it. It is therefore important to face spammers head on and thwart their attempts at spamming your website.

Thankfully, tackling spammers does not need to be a time consuming endeavor. If you configure your WordPress website correctly, and install a good anti-spam plugin, you can eliminate the vast majority of spam from your website.