I'm also a daily weigher (starkers after first wee of the day) and always have been. I find it keep me focussed and 'eye on the ball' - even if there may be a slight gain due to TOTM or whatever.
If I only got weighed once a week I think I'd feel more tempted to cheat as I'm very much of the "what you don't know, can't hurt you" mentality - at least this way I make sure I know. Like Anja, I also wanted to get into the habit of weighing myself regularly so that when I reach my target I'm more readily aware if my weight starts creeping up again and can quickly do something about bringing it back down again.
Like everything with this diet, though - it's whatever works best for you as (thankfully!) we're all different