I got a FitBit for Christmas this year. I have been wearing it religiously every day. I was wearing it on my wrist but found that it wasn't very accurate. When I would move my arm but not walk it would still register steps and when I was walking but not moving my arm it wouldn't register the steps I was taking.
Finally someone suggested wearing it on your ankle and now it is much more accurate. I am surprised how many Steps I do walk every day. Consistently over 10,000.
Of course the band is too small for my ankle so have to tuck it in my sock but whatever works!