did you advertise the promotion in the right places. some members here may not be interested in wii points. i remember killman made an ad on youtube for wiizone; and it worked out nice for him ... but when members realized they had to make 1,000 - 2,000 posts to get the wii points ... they vanished quickly.
it's hard to come up with something to reward for these. just mix it up, like what all fowler said, and some rep points, posts, something they could benefit from in return.
and, i will tell you one thing about wii experience ... as cool as the navigation buttons are ... alot of guests want to see the forum from the home page .. they move on quickly, and if they don't see the wii topics/posts from the home page, they may not click, or even see the navigational buttons.
maybe use 60X300 image banners in the topic desciption for the systems
check out mattiebo's PS# Board banners
http://psnewsforum.proboards.com/index. ... nadventure