I have a question (Debugging iPad Safari crash running Dromaeo JavaScript tests?) that's gotten 0 votes, 0 comments and only 12 views since June 29. I realize that not all questions get answers, but I wonder why I haven't received the Tumbleweed badge. I did edit the question about two hours after I created it to add an update; maybe that affected the calculation.
Update: Looks like Why can’t the tumbleweed badge be awarded multiple times? talks about this, but doesn't have an accepted answer.