Brandon Fenning

<p>Since the vast majority of WordPress spam is automated in nature, the goal of BotBlocker is to block comment spam bots and not hinder users. This is accomplished through the use of honeypot technology, which tricks the spambot into identifying itself by performing actions that a human could not.</p>
<p><strong>BotBlocker’s features include:</strong></p>
<ol>
<li>Works out of the box to block spam</li>
<li>Automatically stops spam-bots from commenting</li>
<li>Zero hindrance to users: no CAPTCHAS, math questions, passwords or extra input required</li>
<li>Zero false positives and ignores registered users</li>
<li>Can be configured to completely block spam-bots or flag comments as spam</li>
<li>Spam detection messages can be easily adjusted</li>
<li>No javascript or cookies required</li>
<li>Hooks into <code>wp-comments-post.php</code> to prevent spam-bots from directly submitting spam comments</li>
<li>Should work fine with most customized comment forms</li>
<li>No API keys required</li>
</ol>
<p>http://www.lform.com/botblocker/ for more information.</p>
<p>Plugin by <a href="http://www.lform.com/" rel="nofollow ugc">LFORM, a web design company</a> in New Jersey.</p>


BotBlocker

Kills spam-bots, leaves humans standing. No CAPTCHAS, no math questions, no passwords, just spam blocking that stops spam-bots dead in their tracks.

Martin Lormes

<p><em>Block Top Spammers</em> displays a list of your top spammers’ IP addresses, based on all comments in your database that are marked as spam. It also generates a blacklist for your <code>.htaccess</code> file to block those spammers from your website entirely, thus taking load off the server. – You will need another plugin (like <a href="http://akismet.com/" rel="nofollow ugc">Akismet</a>) to identify the spam.</p>
<p>PHP 5 and Apache required.</p>
<h3>Roadmap</h3>
<h4>0.6 (April 2010)</h4>
<ul>
<li>edit blacklist (i.e. remove individual addresses, manually add addresses and/or subnets)</li>
<li>manually override .htaccess location</li>
<li>customize 403 error shown to blocked spammers</li>
</ul>
<h4>1.0 (May 2010)</h4>
<ul>
<li>Multi-Site support (WordPress 3.0, maybe WPMU 2.8/2.9)</li>
</ul>


Block Top Spammers

Block Top Spammers displays a list of your top spammers' IP addresses. It also generates a blacklist for your .htaccess file.

BotBlocker vs Block Top Spammers