Okay while working alongside LBLOG I was involved in the work on reducing and trying to eliminate spam user registration. Here is our first step, a very simple step but also fairly effective. Roughly halfing the number of spam users. A simple Google search for “Spam WordPress MU Users” found a simple fix and we are testing currently to see if it helps. Here is the solution :
# BEGIN ANTISPAMBLOG REGISTRATION RewriteEngine On RewriteCond %{REQUEST_METHOD} POST RewriteCond %{REQUEST_URI} .wp-signup\.php* RewriteCond %{HTTP_REFERER} !.*lmblog.co.uk.* [OR] RewriteCond %{HTTP_USER_AGENT} ^$ RewriteRule (.*) http://die-spammers.com/ [R=301,L] # END ANTISPAMBLOG REGISTRATION
This code should be placed into you .htaccess file, at the end appears to be best. This system is not impossible to beat but is atleast one more wall between you and spammers.
Also remember to change the lmblog.co.uk to your blog address. die-spammers.com is a common address to send spammers to but you can make this whatever you want.
Hope this helps.
Hi, I’ve been using several patterns for years that you may be interest in. I have very little spam with these patterns.
You’ll find them at:
http://matthiaschronicles.tanaya.net/Archives/2010/03/08/1268091634.shtml
Take care.