You should work with FitBit.com to sync up the data from that device for its users. I have a FitBit and use it to track information about my sleep and weight.
Subject: Re: Weight Ticker
Date Sent: 1/15/2011
I have a suggestion for the weight ticker. Instead of have it show the actual weight, have it show the percentage of you reaching your goal and/or how much weight has been lost. I'd like to create a blog about my weight loss and want to display the ticker but I don't want everyone knowing exactly...