BuddyPress.org

I’m using:
– Buddypress Humanity
– WPMU-Block-Spam-By-Math
– SI CAPTCHA Anti-Spam
and
.htaccess
# BEGIN ANTISPAMBLOG REGISTRATION
RewriteCond %{REQUEST_METHOD} POST
RewriteCond %{REQUEST_URI} .register*
RewriteCond %{HTTP_REFERER} !.*yourhomedomain.* [OR]
RewriteCond %{HTTP_USER_AGENT} ^$
RewriteRule (.*) http://die-spammers.com/ [R=301,L]
# END ANTISPAMBLOG REGISTRATION