This plugin makes it easy to delete spam posts submitted to your website by creating a dashboard called "Clobber Spam" in your Users menu.
This plugin adds a menu item to the Users menu of your administration dashboard. Click this new "Clobber Spam" link and you will see a page that puts the most recently created user names next to the email address and the title of the most recently created post by that user. You can check a box next to the users you believe are spam and click a button to delete all their posts and prevent them from logging in ever again.
Because the software these spammers use will try to submit more than one post for each account, sometimes days later. If you delete the user, the same user name can be recreated. By keeping the user and changing the password and email address, we prevent that account from being used. The spam software is forced to create a new account to continue bothering us. Also, I already use a really good plugin to delete old and unused user accounts. It is called Inactive User Deleter by shra and I regularly use it to delete users with no posts and no comments that are at least 6 months old.
I would love to build the "akismet for posts" because I could make a lot of money selling it. I have been using Ban Hammer and Stop Spammer Registrations and I still decided to build this plugin to handle about 50 posts a week that these plugins are failing to prevent.
Send me your idea, and we can have a conversation.