Hi ladies, 
I am new to posting, but have been stalking this board for sometime.  Acting on recommendations from several of you I have joined MyFitnessPal.com and I love it so far.  It does everything I was doing painstakingly manually in Excel and it does it way better.  So first, a big thank you to the ladies who recommended myfitnesspal.com.
I was wondering if any of you have experience with the Fitbit Ultra Wireless Activity Tracker that is sold in the tools section on MyFitnessPal.com.  Its supposed to accurately measure your daily activity and connect to share the information with MyFitnessPal.  Has anyone tried it?  Does it work?  Is it worth the $100?  What are your thoughts?
I think the concept is great, but I am just not sure how much more it will provide and I don't want to shell out the money without some reviews.
Thanks.