With every blog or website comes the open invitation (though unwanted) to all spam bots in cyberspace. There are a few really good methods to help combat spam posting those ads you really don’t want on your ministry site. In the interest of keeping it clean on your site here is one suggestion for wordpress users. Invisible Defender plugin.
Mitch goes over a new plugin, Invisible Defender, and how it can be used to protect your blog from spam!
http://wordpress.org/extend/plugins/invisible-defender/