ear1grey

NOTE: Worst Offenders for WordPress 2.5 is currently a pre-alpha release for developer feedback only.
If you use any anti-spam tool you will no doubt be delighted that spam can be automatically identified, but less happy that you now have to either trawl through the spam to check for false positives, or just give up and hope for the best – this is where Worst Offenders can help: it analyses messages already marked as spam and uses several techniques to identify messages with common sources, subjects and content – those which are definitely spam. These Worst Offenders can be deleted en-masse, hopefully leaving just a handful of messages that can be checked by hand.
<h3>To do</h3>
Switch to using wp_cache wherever options were used 
Improve count function to remove duplicates

Worst Offenders

NOTE: Worst Offenders for Wordpress 2.5 is currently a pre-alpha release for developer feedback only.

Automattic

Donncha O Caoimh (a11n)

This plugin adds a stylesheet or image to your blog’s html source code. When a browser loads that stylesheet or image a cookie is dropped. If that user then leaves a comment the cookie is checked. If it doesn’t exist the comment is marked as spam. 
The plugin can also check how long it took a user to enter a comment. If it’s too fast it’s probably a spam bot. How fast can a legitimate user enter their name, email, web address and enter a well thought out comment?
For the adventurous, add these lines to your .htaccess and it will block spam attempts before they ever get to WordPress. Replace the Xs with the cookie that was set in your browser after viewing your blog. You can also find the cookie value by examining the page source code and looking for “css.php?k=XXXXXXXXXXXXXXXXXXX”. Make sure the lines go above the standard WordPress rules.
<pre><code> RewriteCond %{HTTP_COOKIE} !^.*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.*$
 RewriteRule ^wp-comments-post.php - [F,L]
</code></pre>
If you use WordPress MU, replace wp-comments-post.php above with wp-signup.php to block spam signups.
<pre><code> RewriteCond %{HTTP_COOKIE} !^.*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.*$
 RewriteRule ^wp-signup.php - [F,L]
</code></pre>

Cookies for Comments

If you don't use any other spam filter plugins, then you can rely on this to stop spam comments for sure!

Must have, if you don't use any other spam filters!

I'd been getting a dozen spams a day on two of my sites. We installed "Stop Spam Comments" on one and "Cookies for Comments" on the other. Both worked perfectly. No more spam. Thanks!



very easy and no more spam!

Sets a cookie on a random URL that is then checked when a comment is posted. If the cookie is missing the comment is marked as spam.

Worst Offenders vs Cookies for Comments