Ask HN: any fitbit users?

I use the Philips DirectLife. It is a pretty good design, however the fitbit is interesting with the clip.

The DirectLife site seems a bit dumbed-down to me, and I thought the fitbit site had some interesting information about diet, etc.

I was very interested to see that fitbit attempts to track sleep patterns. Is it successful with this?

Another interesting thing is the fitbit base station - the DirectLife has a USB connector that you have to manually hook up, and you get an email nag if you haven't done so after a week. The fitbit download appears to be passive and that appeals to me. On the other hand, downloading the DirectLife data brings up the site in the browser and so may be a necessary part of reviewing your progress.