Reverse engineer. Blogger.

Fred Wilson about [his daily pageviews nearly doubling recently](http://www.avc.com/a_vc/2011/08/somethings-happening-here.html):

>”In the past week, the daily visitors at AVC have gone from an average of 10k per day to over 20k per day. Where is it coming from? Well the answer to that is pretty obvious – StumbleUpon.”

I too am seeing an increase of traffic to this site from StumbleUpon (though not nearly as much an increase as Fred has). StumbleUpon is obviously growing.