Yostivanich

Folks were tweet­ing 5,000 times a day in 2007. By 2008, that num­ber was 300,000, and by 2009 it had grown to 2.5 mil­lion per day. Tweets grew 1,400% last year to 35 mil­lion per day. Today, we are see­ing 50 mil­lion tweets per day—that's an aver­age of 600 tweets per second.

via Twit­ter Blog: Mea­sur­ing Tweets. Absolutely insane and I’m help­ing out.