The wiki/blog server in Mac OS X Server is a boon for collaboration between groups with simple needs. It provides easy posting of text, images and other files on wikis and blogs. However, it has a few drawbacks. To improve security on the blogs and wikis, Apple set up filters to allow only a limited set of simple HTML tags in the user-generated content – the rest are automatically removed. For private servers, where the users are authenticated and trusted, this is needlessly limiting. Here’s how to disable that feature.