How to block spambots by user agent using .htaccess

Spambots and spiders that ignore robots exclusion file can kill your site both in bandwidth and by potentially exposing information you don't want 'harvested.' With that in mind, here is a quick-n-dirty guide to blocking spambots and rogue search engine spiders by using .htaccess. First the essential example codeblock, followed by a working example: Continue reading →