Quote:
Originally Posted by Rcourt64
will this plug in auto delete spam comments? or does it store a list of spam comments for admin to review later?
and is it always 2 words required? of can I edit the scirpt for just 1 word?
"assuming its a php file" 
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I haven't used either of them. The purpose for the Captcha plugins is to force the user to decifer the little image puzzle before they can make a comment. It stops the post bots from flooding your blog with spam. Best to click the links and read the authors full notes on them. Btw the Akismet plugin that come with WP works dandy.