Hm... don't know if site is too popular although I haven't found any big forum about Wii Fit discussions, but anyway.
I lost about 3-4 Kg(and now weigh around 116Kg) in a month since I started, doing ~20min of exercise daily, and also kept a low-fat diet. I've also been taking around 3 types of naturist medicine (Reduccino, Himalaya's AyurSlim, Balestra's Slim-Kombu, if you ever heard of them), one of them (AyurSlim) helps decrease the crave for food and made me eat around 1/4 of what I was previously eating without feeling bad about it.
The actual weighing troubles me, because I've seen a lot of weird stuff, like doing weighs before and after exercise and seeing a 1Kg loss, (that was at the beggining, now I see like 0.2Kg), or miraculously dropping 1Kg in the morning after I weighed myself right before sleep. Another weird thing is the clothes. Initially I had no idea how much my clothes weigh (and I didn't wanted to lie to myself saying they're 1Kg), so I undressed, weighed myself, put the clothes, weighed again and got the weight of the clothes. Then I added that and everything was fine (they wore 0.5Kg). When I first changed my clothing to something else (much heavier), I did the same thing, first without, then with clothes on, and with clothes I had -0.5Kg than without them ? That's... impossible, and I'm thinking Wii Fit has a bug in the system when you're using "other" for scales and you're switch the values back and forth a couple of times. I was almost demoralized after the first 2 weeks, to find out that I was having 0.5Kg less which settles things down a bit :). I changed my clothing twice so far and everytime I saw the drop. Last time I did this I weighed myself 4 times (withx2,withoutx2) to see if it's a scale error.