Apparently it doesn't use markup, you can directly edit links and the like with the tools at the top of the edit bar. There's also a button to edit the raw html.
Now I'll have to learn HTML (panics). Being a transfer student from the TV Tropes fora, which was my first forum ever, I might have overestimated myself and tried to run before I could walk...
Please have a look at this Youtube user account. I immediately thought of this site upon watching a couple of his clips. I am told we have tried here to publish some stuff in audiovisual fomat, but it didn't quite work out. Maybe we should contact this guy, perhaps we could profit from each other's work and experience? I am fairly hopeful that he could use some of the material here, and we could use some of his talent with the medium.
This video, for instance, looks like it was taken right out of this very blog