Disable the Admin Bar that now appears on the public side of WordPress blogs.
For a hassle free integration, drop the plugin file into <code>wp-content/mu-plugins</code> (create the directory if needed) and it will be automatically activated.

Disable Admin Bar

This plugin will list posts spammers find the most attractive.
It will help you identify on which forgotten post you should close comments, and also define potentially spam attractive keywords in your titles (eg. “comments”, “feedback”, “guestbook”…)
Read more: <a href="http://planetozh.com/blog/2010/09/spam-magnet-blog-posts/" title="Spam Magnet Blog Posts" rel="nofollow ugc">Plugin’s page</a>

Ozh' Spam Magnet Checker

Identify posts spammers find the most attractive.

Disable Admin Bar vs Ozh' Spam Magnet Checker