Defeat automated spambots (even the new 'learning' bots with dynamically named hidden fields) by adding a client side generated checkbox.
A check is made that the checkbox has been checked before the comment is submitted so there's no chance that a comment will be lost if it's being submitted by legitimate human user.
To combat the new 'learning' bots, this plugin adds dynamically named fields to the comment form so each post has a differently named field and value.
You can set the maximum amount of comments a user can have in the moderation queue to protect you from comment floods (provided you haven't approved any of the spammers comments before)
*new! - prevent spambots from thinking they got links on your site by removing all links from comments that are waiting for moderation
You can get support and see this plugin in action at Growmap
This is provided for free by Andy Bailey
(please remember to delete your cache when you upgrade or change any settings if you are using a cache plugin)
French : Frederic
Spanish : Ramon
Dutch : Onno