Jenny, sorry I missed this.
No we don't do a weekly weigh-in. Everyone has a different weigh-in day and some of us just weigh monthly.
You'll notice in the stickies, there is a March Weightloss Target Thread. At the first of each month, people set a goal and I gather them all into a sticky. At the start of the next month, folks report their status.
Jenny, I don't know if the other groups do a daily thread like we do. Many of our members post the results of their weekly weigh-in when they post that day in the daily.