WP-Hashcash for WPMU

Donncha, doesnt stop working for the WPMU community. He just annouced the release WP-Hashcash plugin for WordPress Mu modified to work on the signup page and help stop splogs automated signups.

This is the description of the plugin and it features:

WP Hashcash is an antispam plugin that eradicates comment spam on WordPress blogs. It works because your visitors must use obfuscated javascript to submit a proof-of-work that indicates they opened your website in a web browser, not a robot. If the javascript check fails, WP Hashcash now gives you three options; it can either put the comment into moderation (default), put the comment in the akismet queue, or delete it.


  1. Blocks all comment spam, but not real comments
  2. Also prevents most trackback / pingback spam
  3. Widget support to display spam statistics and edit the configuration
  4. Works with IE, Firefox, and Safari
  5. 100% standards compliant XHTML 1.1
  6. Tested with Wordpres 2.3, Firefox 2, Safari 3, and IE 7
  7. Akismet compatibility

To install WP Hashcash, just download the plugin and unzip it, then copy the wp-hashcash.php file to wp-content/mu-plugins and visit “Site Admin” -> “WordPress Hashcash” to confirm it’s working.

Download: WP-Hashcash for WPMU