I think timing is important. If you wait too long it may appear as if a prospective student is uninterested. Waiting a few weeks should be okay though. You definitely want to communicate something of substance when you do communicate. E-mailing the admissions committee with no additional information that may strengthen your candidacy is probably only marginally beneficial.
cmv wrote:
I just sent them my letter today. I'm worried that I took too long, but when I first got on the waitlist I was too busy and exhausted to put something meaningful together, so maybe it was better to wait.
From the main Stern thread, it looks like they're mostly still giving out R1 acceptances, so I doubt we'll hear anything until people in R2 start to be interviewed, and R1 admits start either enrolling or withdrawing.
You're not alone, I'm sending in my letter today or tomorrow. I don't think the timing is an issue, I don't expect any wait list movement for a little while. And as you point out, they're still sending out r1 acceptances, so it's going to take some time before people with offers make decisions.