Yeah, like Toady said, not quite. Simply saying you don't think Wave got to that many numbers is by no means proving me wrong. Besides, Wave and Buzz came out at a different time, when everyone was still in love with FB. Now, users are clamoring for another option besides FB, and Google's simply giving it to them. The timing is much, much better than before.

What? Tibbon's post doesn't disprove anything. It just asks if Wave or Buzz achieved that many users so quickly, and the answer is yes--Buzz had millions of users after two days according to Google:

http://gmailblog.blogspot.com/2010/02/millions-of-buzz-users...

A better base metric would be to measure how long it took to reach a specific number of items posted or shared per day. Those posts on Google+ about Google+ would be disqualified outright, which right now account for ~50% of my stream.

Also, in reference to the quickie TC chart, those of number of users who opted-in to a feature their provider activated. In other words, it's a voluntary rollout versus their previous social offerings.