If you're asking strictly about the site, then I think it's alright. The bats flying around are really nice, but the dull white patterned background behind is sorta "meh". I understand the site is under construction, which is why I propose a change. The theme is ninjas, right? Well, maybe the background instead of being a dull-techno-white, could be maybe a skyline of pagodas and such. (Probably at night.) And if you could do the bats, (optional) maybe add gifs of minecraft players poking their heads around corners, jumping off rooftops and disappearing in the shadows, etc. This should be somewhat simple using the gif maker on novaskin. Also, if possible, (a suggestion for the server) if it's available, try adding the animatedPlayer mod to it. It adds all sorts of new swimming, jumping, crouching, flying, falling and walking animations, giving the player more joints and looking a lot cooler as well. The server intrigues me, I'm thinking of joining. Good luck!
- Brick