First impression is important when browsing a forum or website. What do you look for ?
I would definitely say content is one of the most important factors, because that's where the meat of the forums are. But appearance is a really big thing; if it's navigable and the theme/skin isn't too eye-bleeding that I can stand to look at it for an hour or so. I would rather join a new forum (i.e. something that doesn't have much to offer) with a good-looking theme than an old forum with an established community with a cluttered theme.
I would definitely say content is one of the most important factors, because that's where the meat of the forums are. But appearance is a really big thing; if it's navigable and the theme/skin isn't too eye-bleeding that I can stand to look at it for an hour or so. I would rather join a new forum (i.e. something that doesn't have much to offer) with a good-looking theme than an old forum with an established community with a cluttered theme.