How did you get 'likely less than ten million' out of a Quora comment saying 'tens of millions'?
I asked this question at the German Google Developer Day 2010 and a Google Engineer / PM who works on Buzz said it's "tens of millions active monthly users".
Nothing on that page has anything stating "single digit millions monthly".
How did you get 'likely less than ten million' out of a Quora comment saying 'tens of millions'?