How can I allow Forum Posts to display include tags?

Hi,

I've got Advanced Forum installed, but can't find a way to allow posts that have been tagged using other vocabularies to show those tags. For example, if someone upload a presentation at the start of a node, and applies the 'presentation' tag to the node, that tag isn't visible as part of the forum thread. How can such a tag be made visible?

I apologize if I'm missing something obvious here -- I've looked for this and just haven't found it yet.

Thanks