This is a very good article discussing the different HTML Sanitizers available in the PHP community, what they mean, and the general state of things. Even the WordPress sanitizer (Kses) is included in this review. I really recommend you read this before you start building your own mini cms.
[...] This post was mentioned on Twitter by Vid Luther, The Zippy Kid. The Zippy Kid said: New blog post: On HTML Sanitization, What, Why, How http://zippykid.com/blog/2010/08/on-html-sanitization-what-why-how/ [...]