For the project, I would say. It could also be some kind of commercial that doesn't show anything from the movie itself, but draws attention to the work in progress and the fun it should bring to all of us. It can be serious or funny. (Just an idea: Taking a scene from a completely different movie genre like scifi, dubbing it with a dialogue from the silm, and then saying something like: "That's not how a Silmarillion movie is supposed to be? Make your own at silmfilm.proboards25.com")
The final product probably won't be shown outside our "living room theaters" and thus doesn't really need advertisement.
It took around 30 hrs. of rendering and almost the same time to learn how to do such an animation, so I'm at least a little bit proud of it :-D I decided, that "theme1" I posted in the other thread is now the official trailer-theme. ;-)