I am creating a blog portion on my site, where users can register there own blogs on my site. How can I control the type of html that they can enter? Obviously I don't want them inserting malicious code into their blogs that might harm readers. What scripts are currently available? Currently I have PHP's Pear BBcode running for my comment feature, but I want them to have more freedom than BBcode for their blogs. I'm using TinyMCE for the input. Any ideas, or can you point me in the right direction?