I long ago solved my spam troubles using Akismet and SpamKarma jointly. However, my host is now complaining that spammers (which I don't even notice anymore thanks to these plugins) are abusing wp-comments-post.php, which in turn overloads the server (or so they claim).
Is there anything I can do about this ? One option they suggested was adding a captcha plugin (which I thought sounded stupid, since I guess that would probably generate *more* load on the server), and another option was to rename the wp-comments-post.php file.
Is my opinion on the the captcha option unfounded ?
Would the second one really help ? How do I go about it ? Is there any other mention of the file name outside of the theme's "comments.php" and "comments-popup.php" (which I found and corrected too) ?